D975XBX2 - 3 stick configuration and 4Gb

[SpikeONE]

Hello!

I'd appreciate if anyone on this forum could help me with my problem. I have 2Gb of RAM (2 sticks) currently. The CPU runs 400x8 so does the memory - 800.

When I installed 2 more sticks of the same RAM, the system became unstable - no boot, freezes and so on. I tried 1.9v as well as increasing Vmch slightly - no luck there.

I guess the MB doesn't like 4Gb configuration when it comes to 4 sticks and when the CPU is over clocked.

My question is: does anybody know will it work if I install extra 2Gb as only 1 stick? I will have 4Gb and 3 sticks (2x1Gb + 2Gb) to keep dual channel mode. Will such configuration work or not? I want to keep 400FSB with 1:1 ratio to memory.

Thank you!

[RJLeong65]

My question is: does anybody know will it work if I install extra 2Gb as only 1 stick? I will have 4Gb and 3 sticks (2x1Gb + 2Gb) to keep dual channel mode. Will such configuration work or not? I want to keep 400FSB with 1:1 ratio to memory.

Thank you!

 

It is never recommended to run a system which has four DIMM slots on its motherboard and a dual-channel memory controller with only three sticks of memory installed while leaving one DIMM slot empty. In most cases, your system will fail to even POST - and even if it does POST, your memory clockspeed will be sharply reduced and your system's memory controller will be forced to run in single-channel-only mode with severely reduced memory bandwidth. Also, today's memory controllers are much more allergic to mixed sizes of memory than older memory controllers of 10 years ago were; thus, even if you can get your system to work with three sticks, all three sticks of memory should match each other in every way. Thus, you should not mix 2GB and 1GB sticks of memory in the same system since the different size sticks of memory use completely different IC chips and completely different IC densities from one another. (Remember, all 1GB sticks of DDR2 memory currently on the market are double-ranked; thus, the only way to get 2GB on a single stick without violating JEDEC memory specs would be to double the density of the IC chips themselves.)