DFI NF4 UltraD + Opteron 180 + Mushkin Redline DDR500 in Processors, Motherboards and Memory Posted December 22, 2009 I'm running windows 7 on 2x1GB (both with a dual core, and a single core + lanparties). It runs fine. 4x1GB is a little work to get running. My opty 144 would do it without batting an eye (even heavily overclocked), however, it was a bit more work to get it running on my 180, before one of the sets of memory started having problems. If you're going to try, the same modules will be easier. Well that is exactly what i'm shooting for. New egg is listing this RAM on a 'on and off' basis. Luckily its still the same model number and timings. Only thing that scares me is after buying the sticks, i get to know that it was a bad decision. Spending 90 USD makes sense rather than spending a bomb on a new system.... Wanted to confirm this with other DFI mobo users if 4 X 1 GB of the SAME RAM is fine. Still holding back on the purchase and will wait for you DFIers to comment.