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DDR2-667 RAM only showing 512MB

Hello Everyone,

Need some help here. I just recently upgraded my OS from XP to WIN 7 because Microsoft stopped support for XP. However, after upgrading my OS I noticed that I was only getting 1GB of RAM Max. I used the Crucial System Scanner and it shows that each slot can support a max of 2GB DDR2 RAM per slot. I have tested this out with two types of RAM and it shows up like its suppose to.

Two RAMS tested and worked:
1. Super Talent T800UX4GC5 PC2-6400 4GB DDR2-800Mhz RAM
- I used one of this 1x4GB RAM on one slot and it shows up as 2GB like it should.

2. Kingston 1GB DDR2-667 PC2-5300 KVR667D2N5/1G (Kingston RAM)
- I used 2 of this 1GB RAM on each slot and it shows up as 2GB like it should.

BUT...when I use this:
SUPER TALENT STT DDR2-667 1GB (2X512MB) MEMORY KIT T667UX1GV (Super Talent RAM)
- I used 2 of this 1GB RAM on each slot and it only shows up as 1GB TOTAL (512MB on each slot).

Why is this particular Super Talent 1GB RAM only showing as 512MB on each slot?

My Motherboard is a Gigabyte 945GCM-S2C (Socket 775)
CPU is an Intel Pentium Dual CPU E2180 (Conroe) @ 2.00GHz
OS is Windows 7 Professional 32-bit

Thanks in advance for any and all help I can get with this issue.

- K. Jones
2 answers Last reply Best Answer
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  1. Best answer
    I don't understand your confusion.

    You said each SuperTalent stick is 512MB, and your link confirms this. So, of course two sticks will double that (1024MB = 1GB).

    It's not 1GB per stick, it's 512MB per stick.

    Other:
    Based on the amount of DDR2 sticks you have, you seem to have two options:

    1) 2x1GB + 1x2GB = 4GB total, or

    2) 2x2GB + 2x512MB = 3GB total

    By using the single stick, your system will operate in Single-Channel mode which may affect bandwidth. That's hard to say. The advantage is more memory. The reverse holds true for the 2nd option as it will operate in Dual-Channel but have less memory.

    You'd really need to run a game benchmark utility if you play games in both modes to determine if this is an issue.

    You should definitely run MEMTEST as well www.memtest.org because mixing memory types may cause problems. If it completes one FULL PASS without errors you should be okay.
  2. photonboy said:
    I don't understand your confusion.

    You said each SuperTalent stick is 512MB, and your link confirms this. So, of course two sticks will double that (1024MB = 1GB).

    It's not 1GB per stick, it's 512MB per stick.

    Other:
    Based on the amount of DDR2 sticks you have, you seem to have two options:

    1) 2x1GB + 1x2GB = 4GB total, or

    2) 2x2GB + 2x512MB = 3GB total

    By using the single stick, your system will operate in Single-Channel mode which may affect bandwidth. That's hard to say. The advantage is more memory. The reverse holds true for the 2nd option as it will operate in Dual-Channel but have less memory.

    You'd really need to run a game benchmark utility if you play games in both modes to determine if this is an issue.

    You should definitely run MEMTEST as well www.memtest.org because mixing memory types may cause problems. If it completes one FULL PASS without errors you should be okay.


    Thanks photonboy,
    I apologize for my failure to notice that the RAM I was using was labeled 1GB only because it was part of a KIT as you pointed out from the link 1GB (2x512MB). Thanks again for being more clear minded than I was. Much appreciated!

    - K. Jones
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