I Decided to keep my s939 system instead of going to the new AM2's and ddr2, so I'm upgrading my ram while it's still possible to get DDR.
What I have is OCZ's Premier Dual Channel ddr 400, with very nice timings of 2.5-3-3-7 1T. I'm unsure if 1T is the default timing, my motherboard detected 2T(Asus A8N SLI Prem), but this ram easily ran 1T and is 100% stable at 1T.
I run a gaming system, and for 1gig this memory performs extremely well in all high end games(FEAR, COD2).
http://www.ocztechnology.com/product...r_dual_channel
I currently have Windows Vista installed, and this 1gig kit performs VERY well even though Vista recomends 1gig minimum. This ram is in MINT condition, I have the original packaging, and it is only a year old.
This ram has a lifetime warranty, so buy it with confidence knowing if it ever goes bad, you'll get a replacement.
Cheapest Price I found is $140.00 at Tiger Direct Canada, I've seen as high as $150 before taxes!

ALL DDR is going up in price, now is the time to upgrade!
http://www.tigerdirect.ca/applicatio...&sku=O261-6002
Considering the mint condition, I will deliver, and the lifetime warranty, I'd like $120. There is room for negotiation.
Cheers, James.