Dual Channel Memory Stays in Single

By Monoxide41
Nov 7, 2009
  1. I just put it 2 new 1GB memory sticks where my former 512mb sticks were.
    The former sticks were 512MB PC2-4200's.
    The ones I put it are 5300's and are both the same make and brand. Identical...
    When I run CPU-Z it shows that I'm still in single channel... Before with my former memory sticks it showed dual... Now when I throw the former ones in there it will remain single...
    Anyone know how I would go about going back into dual channel? Hopefully with these new memory sticks.
    Thanks in advance.

    Here are some specs if they would help.
    Manufacturer: Micro Star International
    Model: MS-7248R

    Intel Pentium D 805

    New Memory
    2x 1GB PC2-5300 Hyundai Electronics

    Phoenix Technologies, LTD
    Version: W7248AG2 1.0K

    Video Card:
    ATI Radeon HD 4550
  2. Ritwik7

    Ritwik7 TechSpot Chancellor Posts: 1,672   +9

    Ensure that you put the modules in slots having the same colour. Dual channel slot pairs are usually colour coded. If not, then check your mobo manual to determine which slots constitute the pairs.
  3. Monoxide41

    Monoxide41 TS Rookie Topic Starter

    Yeah they are both in the only slots I have. So they match perfectly
  4. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,219   +157

    did you check memory compatibility, and that your dimms will accept 1gb modules?
  5. Monoxide41

    Monoxide41 TS Rookie Topic Starter

    A scan on crucial tells me this...
    "Each memory slot can hold DDR2 PC2-5300,DDR2 PC2-6400 with a maximum of 1GB per slot.*"
  6. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,219   +157

    okay try a different program other than CPUZ, and check your bios to see if it is telling you the same. it is possible (and happens) that CPUZ is mis reporting your memory status.
  7. Monoxide41

    Monoxide41 TS Rookie Topic Starter

    I wouldn't think so, because it's saying I have 2GB of ram, but it doesn't feel any different from when I had the 2 512MB of ram in... It's like I still have 1GB and 1 stick isn't getting picked up...
  8. MetalX

    MetalX TechSpot Chancellor Posts: 1,388

    You probably wouldn't even notice the performance difference between dual channel and single channel operation modes. It can be tough to see any difference even with benchmarks on older systems, simply because the platform(s) do not have enough performance to benefit from the increased bandwidth of dual channel.

    If your computer still feels slow, it's probably something else.

    However, the memory should still be running in dual channel regardless of any tangible performance benefits. Check the BIOS to see if perhaps something is improperly configured. Make sure all the voltages and timings are set correctly.
  9. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,219   +157

    I concur with what metal said, memory status is often misreported with various software programs. the performance boost from dual channel is 10-15% overall , but only in resource intense use. did you try reinstalling CPU-Z or a different program?
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