Gigabyte DS4 + 2x1GB = 2032MB ?

[stu.artd]

I have just built a PC based on a Gigabyte DS4 motherboard running the F2 BIOS (installed when I got it) which I believe is the most recent release.

I got the system board and TwinX pack of 2 x PC6400 DDR2 for it from scan along with some other stuff but with both sticks of RAM in place the BIOS only sees 2032MB. With either one in the BIOS sees 1016MB. I have tried each of the sticks of RAM in each slot, on their own and in combinations.

Does this seem like fauly RAM or a motherboard issue as it's got me.

I ran memtest+ and it rtan the test on a detected 2032MB.

[grizzla]

erm that is almost fine if u have 2x1GB in theory u should have 2048MB, u are therefore missing 16MB, well i say missing.... My sisters machine running on an ASUS board was only showing 960MB of 1024MB, a quick check of the BIOS showed that the board was set to share 64MB with the video memory, totally unecessary as she has a 256MB XFX6800xt, so u may have some shared memory gon on. Thats all i can think of right now

[stu.artd]

I thought it was soemthing like that as well, it's just that with 2G there's 16MB short and with a 1GB it's 8MB short.

There's no onboard VGA and I've disabled onboard sound.

I can't believe that I have 2 identically dodgy sticks of corsair RAM, but it's that or something with the DS4.

[chuckskull]

You can try it in a different board, DDR2 boards are pretty common. Try a slight voltage bump, if the mobo voltage that might cause it, pretty rare though.

More likely something on the board it taking up 16meg. Seeing as the memory loss is even I'm tempted to think it's the mobo.

[stu.artd]

I tried overclocking the CPU a little and the full 2GB (2048MB) is seen at BIOS level and in Windows.

I'm going to drop the CPU back to it's default speed and see if it goes back.

[chuckskull]

I tried overclocking the CPU a little and the full 2GB (2048MB) is seen at BIOS level and in Windows.

I'm going to drop the CPU back to it's default speed and see if it goes back.

Yeah sometimes RAM needs a little voltage boost. So long as it works.

[robg1701]

I was reading the manual the other day as its a baord im considering getting...there was mention at one point, in the fan speed adjustment section i think that the intel Quiet System Technology (or somthing like that) uses a bit of ram...perhaps that ?

[stu.artd]

I think you've got it . If there was a prize you'd be the winner

I've looked in the relevant section and on Page 42 in a little note at the bottom....Intel(R)QST....a small portion of system memory will be shared when Intel QST is enabled.