Recommended Posts

I bought some RAM online but the pin layout is different. Looking at some online datasheets they are both DDR2 and made for desktop but seem incompatible.

I say they are incompatible because the notch on the new RAM is more centered than the one on the current PC.

Here are the part numbers:

78T6453FZ0-CD5 (current)

F2-6400CL5D-4GBNT (new)

With that, Google will show information and hopefully you guys see something Im missing :)

Thank you

Link to comment
https://www.neowin.net/forum/topic/1162102-different-pin-layouts-for-ddr2/
Share on other sites

I've had that very same problem when rebuilding older systems, best advise I can give, is go back to your retailer, and tell them that the module doesn't fit, (if possible take the mobo with you) that way it's the retailer who will try to solve the problem for you. (At least that's what I did)

Please note, I only know how to build em, not much more than that...

If they are visibly different (DDR2 FBDIMMs are different from UDIMMs, for example), take them back to the store - nobody can argue with that.

 

However, if PNs are correct, they, in theory, should both be DDR2 UDIMM and therefore similar :s

Are you sure you're not putting them the other way round (which is a stupid thing, but does happen to the best of techxperts)?

 

post-382760-0-37712900-1372685742.png

The first listed, 78T6453FZ0-CD5, appears to be a part number for the actual memory chip, not the stick of memory, so it's kind of hard to compare the two numbers you gave. That memory module is used on a number of different sticks of memory.

 

Same as most people have said though. Take them both out and line them up, do they match or no? Make sure you put it in the right way, make sure neither or both are registered, buffered, ecc, etc. You can hold them pin edge to pin edge and quickly see if the pins line up or not.

According to an OEM PC site for memory -

I did a memory search - and the first if you put a M in front of it .  

Seems to be Samsung OE  (Manufacturer Number)

Which it is saying that it is PC 4200  and is listed as this "DDR2-533 DIMM iMac G5, Samsung" ..

 

Hope this helps...  

 

The second number comes back as this...

 

G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBNT

Ahh, you're right. Add M3 to the front and it shows up as a 512 MB stick of DDR2. They both look to be unbuffered and non-ecc, as well as 240 pin DDR2. I hate to say it but I'm gonna have to also go with putting them in backwards. I don't see any reason why they would be different pin layouts.

Don't mean to sound daft, but erm... did you try to flip it ? seems to me that the only problem looking at your pics is that both sticks are in the opposite direction, nothing more...

  On 02/07/2013 at 07:15, MP Technologie said:

Don't mean to sound daft, but erm... did you try to flip it ? seems to me that the only problem looking at your pics is that both sticks are in the opposite direction, nothing more...

Maybe I did not try it because of the sticker :p I feel like I should be nominated for a Darwin award if its just that lol.....

Give me a second.

  On 02/07/2013 at 07:15, MP Technologie said:

Don't mean to sound daft, but erm... did you try to flip it ? seems to me that the only problem looking at your pics is that both sticks are in the opposite direction, nothing more...

 

 

  On 02/07/2013 at 07:45, neohelp said:

Yup, Darwin award nomination here.

Sorry about wasting your time, guys.

LOL glad it's sorted, award the answer to the guy above pls on page 1 :P

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Hello, I am using a Hitron CODA56 cable modem with Comcast Xfinity's 1200 Mbps service.  No issues noted.  I had looked at the Motorola and Netgear options for a cable modem, but neither was available for purchase at the time I upgraded my cable connection. There are multiple models in the Netgear Nighthawk X10 line-up.  I am guessing you have either the the Netgear Nighthawk X10 AD7000 model (R8900) or the Netgear Nighthawk X10 AD7200 model (R9000) model, is that correct?  Both of these only have one gigabit WAN (internet) ports for connection to the modem, all of the remaining ports for the LAN side of things are gigabit Ethernet ports.  The 10GbE port on the devices is meant for connection to local NAS storage.  I suppose you could connect the desktop computer directly to it, although it would still be limited by the gigabit connection between the cable modem and the Netgear residential gateway broadband router. I would suggest looking for a residential gateway broadband router from a company like Asus, Netgear, TP-Link or maybe even Ubiquiti, depending upon budget, that has 2.5Gbps (or faster) WAN and LAN ports.  That would allow you to make full use of the 1.2Gbps connection from your ISP as well as have some room for future growth, speed-wise. Regards, Aryeh Goretsky      
    • Firefox 140.0.1 by Razvan Serea Firefox is a fast, full-featured Web browser. It offers great security, privacy, and protection against viruses, spyware, malware, and it can also easily block pop-up windows. The key features that have made Firefox so popular are the simple and effective UI, browser speed and strong security capabilities. Firefox has complete features for browsing the Internet. It is very reliable and flexible due to its implemented security features, along with customization options. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online. Firefox 140.0.1 fixes: Fixed text contrast issues in the sidebar with some dark themes. (Bug 1971487) Fixed a startup crash experienced by some users caused by DLL injection. (Bug 1973947) Download: Firefox 64-bit | Firefox 32-bit | ARM64 | ~60.0 MB (Freeware) Download: Firefox 140.0.1 for Linux | 64-bit | ~90.0 MB Download: Firefox for MacOS | 127.0 MB View: Firefox Home Page | Release Notes Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • Hello, RAID-1 is also known as disk mirroring.  That means that all writes are going to be performed identically to all of the drives in the array.  It may also apply to reads as well, but those tend to show less of a performance improvement. If a file gets accidentally overwritten, deleted, or otherwise accidentally modified in a RAID-1 array, that change gets written to all of the drives in the array.   If your goal is to have some level or redundancy or protection fir  your information, having two separate drives that are not RAIDed together in a mirror configuration may be the better solution, as an accidental disk or file operation on one drive does not automatically occur on the second drive.   Regards, Aryeh Goretsky  
    • So, they are going from a BSOD, to a new BSOD (too bad I couldn't change the colors of the B's.
  • Recent Achievements

    • Week One Done
      Marites earned a badge
      Week One Done
    • One Year In
      runge100 earned a badge
      One Year In
    • One Month Later
      runge100 earned a badge
      One Month Later
    • One Month Later
      jfam earned a badge
      One Month Later
    • First Post
      TheRingmaster earned a badge
      First Post
  • Popular Contributors

    1. 1
      +primortal
      576
    2. 2
      ATLien_0
      185
    3. 3
      +FloatingFatMan
      178
    4. 4
      Michael Scrip
      137
    5. 5
      Xenon
      120
  • Tell a friend

    Love Neowin? Tell a friend!