Does your mobo look like this one
with the big heat-sink and heat-pipe and 8-pin CPU power on it?
Quote from that review:
"Something doesn't sound right.....:?
XFX states that their nForce 750a SLI motherboard supports the 95W TDP AMD Socket AM2+ CPUs. One thing to note is I was able to install and run all of our standard motherboard tests with the 125W TDP AMD Phenom X4 9850 CPU we use for our AMD platform. At no point were issues found with this combination in running any of the tests and in fact the performance was the highest on this combination in almost every test. Also tested on this board was an AMD Phenom x4 9950 which was just released. The 9950 has a TDP of 140W and no issues were found with that CPU on this board.
if he picks up a 790X, he'd have to settle for an older AM2 variant anyways if he wanted to re-use his rather large investment in DDR2. I'm sure part of the reason he sought out that 750a chipset was for this reason. The mobo you suggested is not compatible with his 8GB of RAM.
That 750a board can probably handle the quad just fine as long as the bios doesn't refuse it all-together and you don't OC it, and perhaps more importantly, as long as you do something to compensate for the loss of proper VRM cooling caused by your water cooling of the CPU. PUT A FAN BACK WHERE IT BELONGS, IE: BLOWING AT THE VRMS.Edited by mdocod - 3/25/11 at 9:49pm