IE10 is 8% faster than Chrome 20, says Strangeloop

The browser landscape is quite crowded and is full of competitors from nearly every major technology company on the market. When it comes to selecting a browser for your needs, selecting the right one can be a bit difficult as they all offer compelling features. 

The test was conducted by Strangeloop, a company who measures website performance, and they came to the conclusion that IE10 is the fastest browser on the market. The 14 page report contains the results of a study of the top 2,000 retail websites, as ranked by Alexa.com. Each site was tested using a tool called WebPagetest – an open-source project primarily developed and supported by Google -- which simulates page load times from a real user’s perspective across current browsers: Chrome 20, Firefox 13, and Internet Explorer 7 through 10.

The end result is that IE10 was 8% faster than Chrome 20 but overall, pages were loading 9% slower when compared to the 2011 report. This is likely because webpages are becoming more complex and with a more robust feature set, comes slower loading times. IE10 was slightly faster than Firefox 13 too with IE10 average load time taking 6.392 seconds, Firefox at 6.395 seconds and Chrome 20 at 6.906 seconds.

Microsoft is certainly happy with the result of IE 10 at the top of the chart and had this to say:

We are thrilled Strangeloop Networks’ recent report validates IE10 delivers the best real world site performance, surpassing all other modern browsers. Real world performance is the most important factor in evaluating browsers and something that has been a focus for the IE team forsome time. Measuring browser speed only with milliseconds in web micro-benchmarks is simply not a good indicator of the performance a user will experience when they browse the web. Many factors matter, including page load time of real world sites, which is why we are excited that IE10 delivers the fastest web experience for the world’s most popular sites according to Strangeloop Networks.

-Roger Capriotti, Director Internet Explorer


While Microsoft will surely be pleased with IE10 coming out on top with this report, there is one small problem. Currently IE10 is only available to those who have Windows 8 installed, which is a small minority and that IE10 has not yet been released on Windows 7. So, while the browser may be top of the charts right now, it is a very small minority who actually has access to this browser.

Source: Strangeloop

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It is funny, that is the comparison is with the previous version of Chrome. A have no problem with IE since 9, except the very slow updates, since HTML5 is constantly expands. Even Chrome with the very frequent updates can not fully support it. IE10 is till behind Chrome in HTML5 support, so go MS, i want to see an IE, which will not causes headache to web developers.

Nothing wrong with IE10 tbh it looks nice, runs smooth and at least has the privacy feature more than i can say for chrome. I didn't like IE in the past and if i am honest my choice of not liking IE was some time ago and i skipped many versions of IE since not giving it a chance.

I am glad i have IE10 a chance because its not actually that bad. It has a spell check now so kinda cool for a Dyslexic like myself heh.

IE 10 has not been "officially" released. There you have it.

Before you scream that it has, deal with this simple fact: Windows 8 has not been released yet.

Argue all you like, but where on MS site can you download it? Where is MS official claim that IE10 has been released? That's right. It hasn't been released.

haha but the end user never really notices all these percent increases in speed, otherwise web pages would honestly load instantly

Wow I see nothing so different about IE 10 compare to IE 9 when it looks the same.

Funny now Microsoft will market the browser *Internet Explorer 10 is the worlds fastest browser* and they will do another stupid comparison to Firefox and Chrome.

8% faster, not impressive to anyone, not even to me.

Princess Chica Ami said,
Wow I see nothing so different about IE 10 compare to IE 9 when it looks the same.

You understand that every now and then companies actually change something other than looks, right?

Okay, lets think about this for a moment.... Internet Explorer 10 may very well be 8% faster, according to one company, but it's only one company, and other company's may indeed see different end results - determined by alternate testing methods. Here's the problem... Internet Explorer 10 is simply limited to those that use Windows 8, which doesn't actually matter for those who still use XP and on up to Windows 7.

Regardless of which version of Internet Explore is used (and 10), it still lacks what other browsers offer. Chrome, for example, is always up-to-date to support the latest technologies that allow many of us to view stunning web pages from those who create them, something that is often hard to achieve in Internet Explorer. Look, 8% is really nothing. When I am able to view web pages as intended, that is the browser I choose to use.

After all, Chrome works with earlier versions of Windows, whereas Internet Explorer is restricted by whatever means Microsoft puts in place - "way to go Microsoft". Not a very good business practice in my opinion.

Talking about IE10... When can we expect it on Windows 7? That's what I want to know. Previews on Windows 8 are all fine and dandy, but I personally would be satisfied with a public beta or a port of sorts to Windows 7... Unless it makes a debut on 7 when 8 comes out, which is pretty soon.

actually i'm pro-IE but really, who the hell gives a **** about synthetic benchmark scores and a few milisecs? yeah it's very impressive, if you browse with this or that you're actually 2 or 3 seconds faster per day than the other guy

so honestly, this speed crap should be the last f***ing thing to put interest in when choosing a browser; security, out-of-the-box function, customizability, even design - or in google's case, how much one loves to be spied upon -, all more prominent issues

and from my point of view chrome 65 could be ten times faster than ie10, i don't like to deliberately install spyware on my rig

Why do I get the feeling like the people responsible got their numbers' crossed here. Even if it is true 8% isn't a giant leap and that still wouldn't make me use IE. The problem with IE is that it's slow (yes, I said it), very unstable (it can crash at any time), harder to use, doesn't have any integration. If it does, it sucks because I used to be an IE user until my cousin showed me Chrome. After that, it was "bye bye IE" and "hello Chrome".

dtourond said,
Why do I get the feeling like the people responsible got their numbers' crossed here. Even if it is true 8% isn't a giant leap and that still wouldn't make me use IE. The problem with IE is that it's slow (yes, I said it), very unstable (it can crash at any time), harder to use, doesn't have any integration. If it does, it sucks because I used to be an IE user until my cousin showed me Chrome. After that, it was "bye bye IE" and "hello Chrome".


i could have made an argument but i wont bother seing your brain is the size of a bean.

IE10 works flawless all day, every day for me. Been using it since I installed Windows 8 a few weeks ago. It's also fast, and renders every site I visit perfectly. Chrome is good and I use to like it, but on my Windows 8 machine, if you play flash and try to move the chrome window, it stutters even though this computer is very high end (3930K, GTX 580, 16GBs of Ram). I guess if you're addicted to add-ons, chrome or FF are better, but otherwise it's a toss up. And frankly, upsetting as it may be to some, I really think the only really decent and most used add-ons for those browsers are the ones designed to allow theft of bandwidth.

nickcruz said,

i could have made an argument but i wont bother seing your brain is the size of a bean.

The point still remains that IE does it major improvement in order for it to become a considerable browser for the average user.

And seeing as you're resorting to insults I can see how smart you are.

J_R_G said,
IE10 works flawless all day, every day for me. Been using it since I installed Windows 8 a few weeks ago. It's also fast, and renders every site I visit perfectly. Chrome is good and I use to like it, but on my Windows 8 machine, if you play flash and try to move the chrome window, it stutters even though this computer is very high end (3930K, GTX 580, 16GBs of Ram). I guess if you're addicted to add-ons, chrome or FF are better, but otherwise it's a toss up. And frankly, upsetting as it may be to some, I really think the only really decent and most used add-ons for those browsers are the ones designed to allow theft of bandwidth.

I've used IE 10 on my laptop which happens to run Windows 8 RP and I didn't notice much of a difference in speed. I will grant that IE 10 does have a great UI but it still need to make improvements on speed, stability, ease of use and integration. The only one that can almost pass is stability but definitely speed, ease of use and integration are on the list. Even if they could add a couple more features that Chrome has that would be nice.

If they can do that then I'd gladly use IE. Until then, I'll use Chrome (the Metro version) and Firefox which gets the job done, and more.

What turned me right off about IE 10 was that I couldn't right-click and save photos, where as in Chrome not only can I save photos but (if I want to) I can also open up the image separately and/or copy the images direct-link.

Integration is also key. It would be great if Microsoft could integrate their services in IE like Google did with syncing tabs across your google account for example.

Edited by dtourond, Sep 19 2012, 12:10am :

dtourond said,

The point still remains that IE does it major improvement in order for it to become a considerable browser for the average user.

And seeing as you're resorting to insults I can see how smart you are.

Insults aside, Microsoft has a lot of catching up to do, that is, Internet Explorer is a bit behind when it comes to standards, speed, and design. It really is inconsistent, but it is improving with time.

26-1-3-8 said,

Insults aside, Microsoft has a lot of catching up to do, that is, Internet Explorer is a bit behind when it comes to standards, speed, and design. It really is inconsistent, but it is improving with time.

Why would the browser that currently leads the pack in terms of compatibility score and speed need to "catch up" with anything?

Funny how with the release of IE9 certain-kinds of people suddenly stopped regarding browser performance standards.

Lord Method Man said,

Why would the browser that currently leads the pack in terms of compatibility score and speed need to "catch up" with anything?

Funny how with the release of IE9 certain-kinds of people suddenly stopped regarding browser performance standards.

I believe your misinformed! IE is not leading anything. Here, below are a couple of links to help you understand:

http://www.w3schools.com/browsers/browsers_stats.asp
http://gs.statcounter.com/#browser-ww-monthly-201107-201207

26-1-3-8 said,

Insults aside, Microsoft has a lot of catching up to do, that is, Internet Explorer is a bit behind when it comes to standards, speed, and design. It really is inconsistent, but it is improving with time.

They did good though with the UI in IE 10. Now if they can improve the other parts then it should be good.

Matthew_Thepc said,

Those links have to do with browser use, not compatibility and speed.

Guess who I think is misinformed?

Never the less, it's obvious that IE does have some catching up to do. If they can improve speed, stability and integration then I'd definitely use it.

dtourond said,

Never the less, it's obvious that IE does have some catching up to do. If they can improve speed, stability and integration then I'd definitely use it.


I would agree that it has a lot to improve in the PR department (though a lot of that is leftover from IE6), but the post he was quoting & replying to clearly said:

browser that currently leads the pack in terms of compatibility score and speed

which is referring to the speed & compatibility of the browser, not the adoption of it (where everyone agrees IE has some catching up to do .

chrome is the fastest browser on all of my machines. i dont need some news story to tell me that. I can see it with my own 2 eyes.

the420kid said,
chrome is the fastest browser on all of my machines. i dont need some news story to tell me that. I can see it with my own 2 eyes.

it's called denial.

the420kid said,
chrome is the fastest browser on all of my machines. i dont need some news story to tell me that. I can see it with my own 2 eyes.

Highly scientific conclusion with absolutely no hint of confirmation bias. I applaud you sir.

the420kid said,
chrome is the fastest browser on all of my machines. i dont need some news story to tell me that. I can see it with my own 2 eyes.

So what? Who gives a sh*t. In a blindtest you'd never be able to tell. The subtle difference is practically unnoticeable, and the rest is just personal preferences and beliefs.

dtourond said,

Actually, it's called the truth. Don't mix the two.


Strange that one still believes this after IE beats Chrome in third party tests and even pro-Chrome tests such as Sunspider.

Neobond said,
Does IE10 have bookmark syncing etc?

Bookmarks, logins and passwords, browser settings - synced with Windows 8. History might be as well, not sure though.

Breaking News: German government urges public to stop using Internet Explorer - http://reut.rs/PwZ1S0

The German government urged the public on Tuesday to temporarily stop using Microsoft Corp's Internet Explorer following discovery of yet-to-be repaired bug in the web browser that the software maker said makes PCs vulnerable to attack by hackers.

calimike said,
Breaking News: German government urges public to stop using Internet Explorer - http://reut.rs/PwZ1S0

The German government urged the public on Tuesday to temporarily stop using Microsoft Corp's Internet Explorer following discovery of yet-to-be repaired bug in the web browser that the software maker said makes PCs vulnerable to attack by hackers.


every browser has these vulnerabilities. fools to think that your secure with any browser of choice. they all have their 0-day drive-by's

calimike said,
Breaking News: German government urges public to stop using Internet Explorer - http://reut.rs/PwZ1S0

The German government urged the public on Tuesday to temporarily stop using Microsoft Corp's Internet Explorer following discovery of yet-to-be repaired bug in the web browser that the software maker said makes PCs vulnerable to attack by hackers.

the last time we listened to the German government, you know what happened.

neonspark said,

on google's own benchmark? yeah.

So true. Google now have 2 benchmarks and amazingly Chrome is the fastest in both. Thats just so shocking eh...

What bothers me though is that sites actually use these Google benchmarks to test browsers. Totally unfair. Only 3rd party benchmarks, and more importantly, real world tests need to be done, on actual sites.

IE doesn't even render pages correctly. What makes anyone think IE10 isn't just skipping some of the javascript or rendering?

simplezz said,
IE doesn't even render pages correctly. What makes anyone think IE10 isn't just skipping some of the javascript or rendering?

According to the w3c html5 test suite, IE is more standard compliant than any other browser.

So, if something doesn't work on IE10, you should rather complain to the webmaster targeting non standard compliant implementations in other browsers.

simplezz said,
IE doesn't even render pages correctly. What makes anyone think IE10 isn't just skipping some of the javascript or rendering?

it skips the waiting.

simplezz said,
IE doesn't even render pages correctly. What makes anyone think IE10 isn't just skipping some of the javascript or rendering?

Orly? When did you last try it? In 2001 with IE6?

link8506 said,

According to the w3c html5 test suite, IE is more standard compliant than any other browser.

So, if something doesn't work on IE10, you should rather complain to the webmaster targeting non standard compliant implementations in other browsers.

Really? Your kidding right?

26-1-3-8 said,

Really? Your kidding right?

It's a fact. And theres no higher authority on this than W3C itself. Get with the times, IE10 is the most standards compliment and the fastest browser for REAL world usage. It's not 2001 anymore.

We're upto version 23 in the dev channel, would be nice to compare this version to IE10 since version 23 will be out before Windows 8 is even made available to the general public.

Tony. said,
We're upto version 23 in the dev channel, would be nice to compare this version to IE10 since version 23 will be out before Windows 8 is even made available to the general public.

but then you'd have to compare it to IE11.....

Chrome's performance is quite pants in Windows 8 for the time being. Not referring to benchmarks, of which Chrome still holds a slight edge, but the speed of the UI and smoothness of navigating webpages. I'm also noticing checkerboarding on a DESKTOP browser which is a bit silly.

And for the record, the same hardware I'm basing these observations on - IE9 was quite choppy. IE10 though is surprisingly fast and smooth, unless you introduce tons of Flash ads but that bogs down my laptop with any browser.

I find Chrome to perform better than IE on Windows 8 (as on previous versions). More importantly, the font rendering is terrible and much more difficult to read. This is especially noticeable on Neowin, where all the text appears blurry. More importantly, standards support is still woefully lacking - something that renders properly in Opera, Firefox and Chrome will display bizarrely in IE, despite being W3C compliant.

I'm all for Microsoft putting more effort into IE but it's still not a viable alternative to Chrome for me.

I would like Chrome to perform better, but quick litmus test by testing scrolling on IE10 and the dev build of Chrome on say Facebook with smooth scrolling on, and IE10 wins. That is considering adblock is on in Chrome, so there should be less elements on the page to render.

Speaking of smooth scrolling, it's been broken in Chrome for the last few versions, and the addons don't cut it. (If you place your cursor over the scrollbar and scroll, it does scroll properly.)

Eventually I would like to return to Chrome, due to extensions, but IE does the job for now.

Edited by Denis W., Sep 18 2012, 8:00pm :

theyarecomingforyou said,
I find Chrome to perform better than IE on Windows 8 (as on previous versions). More importantly, the font rendering is terrible and much more difficult to read. This is especially noticeable on Neowin, where all the text appears blurry. More importantly, standards support is still woefully lacking - something that renders properly in Opera, Firefox and Chrome will display bizarrely in IE, despite being W3C compliant.

I'm all for Microsoft putting more effort into IE but it's still not a viable alternative to Chrome for me.

interesting. IE10 is so HTML5 compliant that one hardly notices any differences. It is chrome with its ton of unsupported un finalized spec features that tends to bust everywhere.

Comparing something still pre-release to something that isn't even the newest stable anymore, go back and redo the tests with Chrome 22 vs IE10 or Chrome 21 vs IE9.

thealexweb said,
Comparing something still pre-release to something that isn't even the newest stable anymore, go back and redo the tests with Chrome 22 vs IE10 or Chrome 21 vs IE9.

When a release version of IE beats a release version of Chrome, people yell that we need to compare the prerelease version of Chrome to the release version of IE.

When a release version of IE beats a prerelease version of Chrome, people yell that we need to compare the release version of Chrome to the release version of IE.

When a prerelease version of IE beats a release version of Chrome, people yell that we need to compare the prerelease version of Chrome to the prerelease version of IE.

When a prerelease version of IE beats a prerelease version of Chrome, people yell that we need to compare the release version of Chrome to the prerelease version of IE.

Whatever happens, when IE beats Chrome in anything, well it is a fault of the testing methods, the wrong version of Chrome, cheating by not comparing the correct release/prerelease versions, the company doing the testing was paid by Microsoft (but when Google makes the claim themselves, it is the honest truth), etc. etc. etc.

Anything but admit that maybe Google is not perfect.

nohone said,

snip.

Why would I say compare pre-release chrome to release IE? All I'm asking for is a fair test for once. Every time for last few months this topic crops up MS is always playing unfair and undermining their stance, btw no Chrome isn't perfect by any means.

thealexweb said,
Comparing something still pre-release to something that isn't even the newest stable anymore, go back and redo the tests with Chrome 22 vs IE10 or Chrome 21 vs IE9.

IE10 is NOT a prerelease version. It is at RTM stage. It clearly states that IE10 is at RTM in its about box. So, your point is invalid.

Nazmus Shakib Khandaker said,

IE10 is NOT a prerelease version. It is at RTM stage. It clearly states that IE10 is at RTM in its about box. So, your point is invalid.

The other day I was discussing Windows 8 and I got supposedly blown out because Windows 8 is pre-release therefore we can't judge, can't win against the fanboys xD

thealexweb said,

Why would I say compare pre-release chrome to release IE? All I'm asking for is a fair test for once. Every time for last few months this topic crops up MS is always playing unfair and undermining their stance, btw no Chrome isn't perfect by any means.

I am not implying you said these things, but they are excuses that I have read here on Neowin and around the net. The claim is that, even though a prerelease version of Chrome may not be stable, it is available to users and a release version of IE is all that is available. It is all about finding a specific version of Chrome that can "prove" IE is a bad browser.

But really, does any of this make a bit of difference? With these numbers, we see a 0.514 second difference of loading 2000 web pages between IE and Chrome. We have people, spending hours mixing and matching browsers to compare JavaScript performance, to find differences of milliseconds, and then hours more triumphantly writing about their latest find on the internet. I don't visit 2000 web pages/day, so half a second does not make a bit of difference, and certianly a few milliseconds do not. And the whole "if you add it up over time" bit is a crock - because half a second does not impact my day to day life; hours do, but not fractions of a second.

thealexweb said,

Why would I say compare pre-release chrome to release IE? All I'm asking for is a fair test for once. Every time for last few months this topic crops up MS is always playing unfair and undermining their stance, btw no Chrome isn't perfect by any means.

Alex, isn't the test fair enough? From the article:


Each site was tested using a tool called WebPagetest - an open-source project primarily developed and supported by Google

thealexweb said,
Comparing something still pre-release to something that isn't even the newest stable anymore, go back and redo the tests with Chrome 22 vs IE10 or Chrome 21 vs IE9.

How's IE 10 pre-release? it is RTM meaning done. sorry bud but pre-release is IE11.

RommelS said,

Alex, isn't the test fair enough? From the article:


Each site was tested using a tool called WebPagetest - an open-source project primarily developed and supported by Google

Well if versions are just being picked and chose at will no its not fair.

thealexweb said,

Well if versions are just being picked and chose at will no its not fair.

Alex, guess again.

Stable Release of Google Chrome is 21, and it was released on August 29, 2012, and Version 22 beta started on September 12. The report was released and announced today, guess what? The stable version of Chrome at the time of the test is 20. Do you really think that preparing this report and testing the browsers happen overnight?

If the rumor of quicker and smaller Windows updates holds true the same should hold true for IE as well. Wonder if we'll see a 10.1 or 10.5 at some point next year.

vacs said,
and most probably also at least 8% less secure than Chrome 20...

More than 8% if you include the latest drive-by malware infecting IE. Most people have either flash or java installed.

simplezz said,

More than 8% if you include the latest drive-by malware infecting IE. Most people have either flash or java installed.

Except that it doesn't infect IE10!

So far IE10 had never been hacked.

vacs said,
and most probably also at least 8% less secure than Chrome 20...

Sorry but you're ignorant.

IE10 has a new sandbox (enhanced protected mode) that is more secure than IE7/chrome's sandbox. It blocks much more critical resources including localhost or local network communications in case of exploit.

It also support new memory protection features that chrome doesn't support yet.

Btw, according to a study sponsored by google, IE had 70% less flaws than Chrome these last few years.

vacs said,
and most probably also at least 8% less secure than Chrome 20...

Chrome hasn't even held up to IE9, having more security vulnerabilities and attacks. Right now IE9 is still scored as the most secure browser. PERIOD.

"they came to the conclusion that IE10 is the fastest browser on the market" ...given that IE10 is ONLY available for Windows 8, and Windows 8 hasn't yet gone on general release, I would hardly class IE10 as being "on the market" right now!!

GreatMarkO said,
"they came to the conclusion that IE10 is the fastest browser on the market" ...given that IE10 is ONLY available for Windows 8, and Windows 8 hasn't yet gone on general release, I would hardly class IE10 as being "on the market" right now!!

err wrong. windows 8 is available to msdn, tech net, software assurance and partners. its in the market like it or not.

GreatMarkO said,
"they came to the conclusion that IE10 is the fastest browser on the market" ...given that IE10 is ONLY available for Windows 8, and Windows 8 hasn't yet gone on general release, I would hardly class IE10 as being "on the market" right now!!

Just because you can't buy it in a store, does not mean it is not available.

ANY PERSON can buy a copy of it today. However, if you want the 'cheaper' upgrade and other versions, you will have to wait.

SubZenit said,
What a joke.

No it is not. Guys, people do not understand how Google Chrome works. Chrome tends to compress and to recreate the content so it is optimized for the user (In case it is needed).

For example, when you have an image that is 1000px width and you force it to have 100 px width by using the width property in the <img> tag, compare it with IE. As you can see, (it seems this is due to Webkit because Safari does it too) the image is shrunk but DOES NOT look sharpened, but quite good, like a thumbnail. It's like Chrome bothered to compress your image and create it anew so it looks favorable for the user. In change, IE will look sharpened and you'll barely notice the image at all!

Jose_49 said,

No it is not. Guys, people do not understand how Google Chrome works. Chrome tends to compress and to recreate the content so it is optimized for the user (In case it is needed).

For example, when you have an image that is 1000px width and you force it to have 100 px width by using the width property in the <img> tag, compare it with IE. As you can see, (it seems this is due to Webkit because Safari does it too) the image is shrunk but DOES NOT look sharpened, but quite good, like a thumbnail. It's like Chrome bothered to compress your image and create it anew so it looks favorable for the user. In change, IE will look sharpened and you'll barely notice the image at all!


Hurr durr, now write it in English please, with the correct terms please. Compress?

@Leo said,

Hurr durr, now write it in English please, with the correct terms please. Compress?

It's more like recreate. I tend to say compress because it's like you open a picture in paint and resize it for like 80%, you'll have a much smaller file size, but with a better quality displayed on that size. The only difference is that Google Chrome will use your CPU to an extent to achieve it.

Jose_49 said,

No it is not. Guys, people do not understand how Google Chrome works. Chrome tends to compress and to recreate the content so it is optimized for the user (In case it is needed).

For example, when you have an image that is 1000px width and you force it to have 100 px width by using the width property in the <img> tag, compare it with IE. As you can see, (it seems this is due to Webkit because Safari does it too) the image is shrunk but DOES NOT look sharpened, but quite good, like a thumbnail. It's like Chrome bothered to compress your image and create it anew so it looks favorable for the user. In change, IE will look sharpened and you'll barely notice the image at all!

You are claiming that Chrome 'resamples' poorly sized images better?

Wow, that is a nice feature to encourage idiot web designers to load huge images on a page when they are resizing it down to a few pixels.

IE is the one that actually pre-processes how the page looks with fixes before a final render, but this is how IE deals with content in a MVVM fashion and treats the web like an App, rather than a Document, as Chrome does.

thenetavenger said,

You are claiming that Chrome 'resamples' poorly sized images better?

Wow, that is a nice feature to encourage idiot web designers to load huge images on a page when they are resizing it down to a few pixels.

IE is the one that actually pre-processes how the page looks with fixes before a final render, but this is how IE deals with content in a MVVM fashion and treats the web like an App, rather than a Document, as Chrome does.


Yes, but THAT IS BAD! I'm not defending chrome, FOR THE CONTRARY. Having at least 5 of them will consume abnormally the CPU, and will set down your computer to your knees. If you run Task manager you can see how chrome starts eating a whole core. That is why I'm saying that it IS slower than IE.