New HP Laptop with mismatched memory


Recommended Posts

SO I bought a new dv6t Quad Edition Laptop from HP with 12GB RAM. This thing is a beast, esp after I put in a SSD. However I am wanting to max the RAM out since I do a lot of virtualization work with VMware and because I can.

I opened up the bottom and discovered mismatched RAM. I downloaded CPUID just hoping maybe someone got lazy with the RAM stickers and it confirms my suspicion.

My 8GB stick is PC3-10700 (667MHz) and my 4GB is PC3-12800 (800 Mhz).

Would it be in my best interest to replace both to 12800 or just replace the 4GB to match the 8GB stick? Or should I get a hold of HP and pitch a fit to see if they will correct this. I am not trying to get any upgrade for free, but when I took my A+ a long time ago 10+ years, I could have sworn that mismatched RAM works but it was an avoid if you can thing.

Mods please move this to Hardware hangout... Thanks

I would just replace the 4 gig stick with another 8. I prefer my ram in matched pairs also, but in most cases it won't matter, they'll both clock down to their lowest common denominator speed and timings. You can run memtest86 to verify its all good.

It makes absolutly no difference that they're unmatched. I don't see anything for HP to 'correct'. If the laptop works at the advertised speed and with the advertised amount of RAM there's nothing wrong.

Yes there is a difference, one set of ram is running at a higher frequency than the other. You also have to factor in the timings for each of the sticks too.

I had a quick look on New Egg: http://www.newegg.com/Product/Product.aspx?Item=N82E16820231530 Just have to check your laptop will support the faster spec ram. With a price that cheap, buy two just for peace of mind.

I think for me it would boil down to what was advertised. If the higher speed ram was on what was supposed to be there I would give them a call and see what happens. If the lower speed was supposed to be there then don't worry about it because the higher speed will clock down.

No harm no foul in calling them if they screwed up. If they were wrong and don't do anything I don't think you will be out much because the I think the performance would be hard to notice.

That being said, I would probably replace the slow ram to match the faster....I like the illusion of more speed :D

my hp laptop has mismatched ram (a 2gig and a 4gig). My guess is they have a brand of 1's, 2's, 4's, 8's. Not surprising really. As long as both are set to run at the same speed (they seem fairly close even if not) it makes no difference if they are identical or not. At work we build a lot of computers out of parts and as such we always have different ram (as it's pulled from scrap computers) and it gets mixed and matched and the computers have 0 problems.

I'd replace the 4gig to go up to 16, close it up, and run with it, you aren't going to do any damage, and as you have said it works perfectly well as is. No need to complicate/overreact to something that miniscule. But that's just my opinion.

Yes there is a difference, one set of ram is running at a higher frequency than the other. You also have to factor in the timings for each of the sticks too.

I had a quick look on New Egg: http://www.newegg.co...N82E16820231530 Just have to check your laptop will support the faster spec ram. With a price that cheap, buy two just for peace of mind.

No really there is not, one can clock faster than the other that is the only difference. The system, being as smart as it is, will slow down the faster memory to the slower memory and everything is now on an equal playing field. While one can go faster than the other, doesn't mean it is or allowed to by the system. This has been like this since way back in 286 and 386 computers.

  • Like 1

I bought a laptop that was advertised with having extra RAM. It was an offer from the store in which I bought it from and the ram was made by different manufacturers. No massive issue, it's compatible and it is the same timings/speed in my case.

I'd go with what others are saying, if some of the RAM is of a lower spec than what was advertised with the laptop, contact HP, if some of it is faster than advertised, that's a bonus and I doubt that they'll do anything about it. In that case, just buy some new ram that matches the fastest chip.

I believe with DDR3 the memory controller can handle mismatched RAM as long as the timings match up, but like was mentioned earlier the clock speeds are set at the slower speed. 667Mhz is a pretty low for a higher end laptop. My Compaq which was originally manufactured in 2007 is running at 1066Mhz(also DDR3). Personally I'd send them an email in the off chance it was an actual error and they send you a replacement stick at the 800Mhz. Else you could upgrade to 1066 but I believe that is the max(See PDF, link below).

Best practice recommends matching memory speeds as well as putting the larger size in the first slot for a reason. My laptop actually bugged out when I flipped the memory cards after doing a cleaning and replacing a broken LCD. They were both the same frequency, but one is 2GB and the other 1GB. It ran fine for a few seconds and then the colors went berserk. In an older Dell laptop I worked on someone had ran mismatched frequency RAM and the thing would boot and actually booted but it had so many glitches errors and random bluescreens. It was fine once I pulled wrong frequency RAM. Though it had more problems than just mismatched RAM.

http://h10032.www1.hp.com/ctg/Manual/c01860375.pdf

This topic is now closed to further replies.
  • Posts

    • Again, this is an irrelevant attempt to attack the messenger. The truth does not require any justification.
    • Removed the blue and underline as you did not post a link. This would also  be considered spamming.
    • Why it's almost impossible to produce a smartphone in the United States by Hamid Ganji If you look at the back of some Apple products, you can see the famous phrase “Designed by Apple in California, Assembled in China.” This phrase appears on products from one of the largest smartphone brands in the United States. These products are designed in the U.S., but their manufacturing takes place in China, India, Vietnam, or even Brazil. But why can’t Apple, as one of the largest American tech companies, produce its iPhones on U.S. soil? The idea for this topic came to me after the Trump Foundation launched a smartphone called the T1 and claimed that it was designed and built with American values in mind. However, this claim did not last long, as it was revealed that Trump’s phone was actually a rebranded HTC U24 Pro, with only a gold case and minor internal component changes. You see? Even a phone that is supposed to represent American values is manufactured in China. With a gross domestic product (GDP) exceeding $32 trillion, the United States is currently the world’s largest economy, while China ranks second with around $20 trillion. On the other hand, the United States is by a wide margin the global leader in various technological fields, and American companies spend hundreds of billions of dollars annually on research and development. From Apple and Google to Microsoft, Lockheed Martin, Boeing, and others, American tech and industrial giants lead their foreign competitors in many sectors. The United States also has no shortage of smartphone brands. Apple, Google, and Motorola are among the major brands in the smartphone market, collectively holding a significant share. However, the vast majority of their products are manufactured outside the United States. So why is it that the world’s largest economy, home to the most advanced technology companies and industrial powers, cannot produce a smartphone on its own soil? Let’s explore this question together. Even threats to impose tariffs won’t work After Trump entered the White House as the 47th President of the United States, his administration adopted strict tariff policies. One of these policies was the imposition of a 25% tariff on smartphones manufactured outside the United States. Trump said he “had a little problem” with Apple CEO Tim Cook over producing smartphones outside the U.S. So he thought that threatening a 25% tax on imported phones might force Apple to bring manufacturing back to the United States. “I have long ago informed Tim Cook of Apple that I expect their iPhones that will be sold in the United States of America will be manufactured and built in the United States, not India, or anyplace else,” Trump wrote on Truth Social. Image via The White House Although Apple currently manufactures some of the iPhone’s chips in the United States with TSMC's help, it still shows no willingness to shift full iPhone production to the country. At the time, renowned Apple supply chain analyst Ming-Chi Kuo wrote on X, “In terms of profitability, it’s way better for Apple to take the hit of a 25% tariff on iPhones sold in the US market than to move iPhone assembly lines back to the US.” However, manufacturing a smartphone in the United States is not as easy as it might seem, and many technical and economic barriers are involved. The lack of necessary manufacturing hubs There is a clear reason why many companies prefer to manufacture their products in China. China has established itself as the main global manufacturing hub for international companies, and over the past few decades, large contract manufacturers have emerged there, allowing companies like Apple to outsource production. One such example is Foxconn, which also manufactures some Apple products in India. Building the infrastructure required to produce smartphones in the United States would require tens of billions of dollars in new investment. Factories would need to be built, essential manufacturing equipment would have to be installed, and, most importantly, a skilled workforce capable of operating these systems would need to be recruited and trained. The United States currently lacks the core infrastructure needed to manufacture smartphones, and for this reason, many companies prefer to outsource production to Chinese contractors rather than spend tens of billions of dollars to build that infrastructure, which is significantly more economically efficient. Additionally, building such infrastructure in the United States could take up to a decade, ultimately leading to a significant increase in the product's final price for consumers. Shortage of trained labor in the U.S. compared to China Decades of serving as a global manufacturing hub have allowed China to build a massive talent pool in the production sector that is almost unmatched worldwide. Today, if a company chooses to manufacture its products in China, it can be confident that the workers involved in production have years of experience in their respective roles and are capable of producing high-quality goods with minimal errors. Even if we assume that tens of billions of dollars were invested in building smartphone manufacturing infrastructure in the United States, finding skilled workers would remain highly challenging. Apple CEO Tim Cook visiting the iPhone 6 assembly line in China in 2014. Image: Tim Cook on X In a 2015 interview on CBS’s 60 Minutes, Tim Cook said the main reason Apple isn’t producing in the US is a lack of skills. "China put an enormous focus on manufacturing, in what you and I would call vocational kind of skills. The US over time began to stop having as many vocational kinds of skills. I mean you could take every tool and die maker in the United States and probably put them in the room that we're currently sitting in. In China you would have to have multiple football fields,” Cook said. Also, in 2017, at the Fortune Global Forum in Guangzhou, Cook once again emphasized the importance of highly skilled Chinese workers. “China has moved into very advanced manufacturing, so you find in China the intersection of craftsman kind of skill, and sophisticated robotics and the computer science world. That intersection, which is very rare to find anywhere, that kind of skill, is very important to our business because of the precision and quality level that we like. The thing that most people focus on if they’re a foreigner coming to China is the size of the market, and obviously, it’s the biggest market in the world in so many areas. But for us, the number one attraction is the quality of the people,” Apple CEO said. Higher labor costs in the United States Producing almost any product in the United States is more expensive than in many other countries, and one of the main reasons is the higher cost of labor in the U.S. According to the Bureau of Labor Statistics, median weekly earnings of full-time workers in the United States were $1,235 in the first quarter of 2026. Meanwhile, the average annual salary in China's private sector in 2025 was RMB 71,590 (US$9,961). In many parts of the world, the weekly wage of an American worker is equivalent to several months of income. Another important factor to consider is that in the United States, the workforce capable of working on a smartphone assembly line is highly specialized and therefore commands higher-than-average wages. According to an estimate by Bank of America, producing an iPhone in the U.S. is technically possible, but “iPhone cost can increase 25% purely on higher labor cost in the U.S.” However, this 25% increase applies only if final assembly is performed in the United States while components are still sourced from China or elsewhere. In this case, the price of a base iPhone would rise from $799 to around $1,000. But in another scenario, if Apple were to produce the required components for the iPhone within the United States, production costs could increase by more than 90%. Trump’s dream for a “Made in the USA” iPhone might never come true In a free-market capitalist economy, one of the primary responsibilities of any CEO is to maximize profit. Using Apple as an example, Tim Cook’s role is to maximize the company’s profits so that it can fund research and development for new products and invest in areas such as artificial intelligence, while also keeping shareholders satisfied. Therefore, it is entirely understandable that Apple would choose not to bring its manufacturing back to the United States and instead keep production in countries where labor is cheaper, and products can be manufactured at a lower cost, thereby maximizing its profit margins. What is your opinion about manufacturing smartphones in the United States? If you are an American citizen, would you be willing to pay hundreds of dollars more for a smartphone made domestically in the USA? Let us know in the comments.
  • Recent Achievements

    • Conversation Starter
      jessse3334 earned a badge
      Conversation Starter
    • Reacting Well
      JuvenileDelinquent earned a badge
      Reacting Well
    • One Month Later
      Excellence2025 earned a badge
      One Month Later
    • Week One Done
      Excellence2025 earned a badge
      Week One Done
    • Week One Done
      flexorcist earned a badge
      Week One Done
  • Popular Contributors

    1. 1
      +primortal
      506
    2. 2
      +Edouard
      196
    3. 3
      PsYcHoKiLLa
      153
    4. 4
      Steven P.
      72
    5. 5
      FloatingFatMan
      65
  • Tell a friend

    Love Neowin? Tell a friend!