How can i Improve Memory Performance?

[nijle4u]

Hey guys, quick rundown of my System Specs:

DFI LANPARTY UT nF4 SLI-D Socket 939 NVIDIA nForce4 SLI ATX AMD Motherboard
Dual Core AMD Opteron 165
GeIL Value 1GB 184-Pin DDR SDRAM DDR 400 (PC 3200) GE1GB3200B (x2)
Cas Latency 3
Timing 3-8-4-4
and 2 GeiL Value 512mb chips of unknown speed (can not find the specs) to give me a total of 3GB of Ram
Vista Premium 32 Bit
ATI 1950 XT (256mb)

When doing the Vista Performance Evaluation I get the following ratings:

Processor 4.7
Memory 4.6
Graphics 5.9
Gaming graphics 5.8
HD 5.0

I would like to raise this all around to a 5.0 and obviously i could run a faster processor or OC the one i have, however my ram seems to be my bottleneck right now. Since this ram is CHEAP i went for quantity over quality (obviously) and i'm thinking now this was a mistake.

My questions are:

How can i tell if I have my ram setup properly for dual channel?
Does anyone know if my motherboard can support DDR 2 ?

And finally is the ram really my bottleneck here right now, or am i barking up the wrong tree here...

Thanks for your time !

 

[(cf)Eclipse]

When doing the Vista Performance Evaluation I get the following ratings:

there's your first problem. don't use such a pointless and meaningless benchmark. if you want to know the real memory performance, test the memory using programs that have been designed to do so, like sisoft sandra or everest. superPI is a good way to gauge changes in memory performance too