I built new system, partially (some stuff from prev pc): GA-MA790FXT-UD5P 955 + AS5 + TRUE Black + 1x 90 cfm fan (both cpu and hsf tried to lap, dunno if it helps, but I did it as could) 2x2GB Patriot Viper II PC3-12800 old sapphire 4850 and HX620 PSU. The mobo mounted on wall, with most of the cables behind it. Maybe looks ugly on the pic, but I like it. Saved money on case + good airflow and I can direct that cpu fan toward graphic card, so it wont take its' hot air instead Well there's nothing much I can say about the motherboard, since I have it few days, and can't compare it to anything, as its my first AMD system. The only thing to note is that there's problem with the 2 memory slots close to cpu and hsf as wide as TRUE. The heatsink blocking these slots. I could still plug some ram as high as my vipers, before putting the heatsink, but thats the limit. At least I can still run dual channel with the other 2 slots, thanks to this next to each other design of paired slots on AMD boards, unlike intel's. Except that nice leds on the power/rest/clr cmos buttons. Easy to see in dark The memory is just 1033 cas 7 for now and already hot to touch while stress testing... CPU stress testing now with stock volltage 200x18 (3600 mhz) running prime95 blend for more than hour. load temps 46-47, without case, within air conditioned room. Increasig multi further to 18.5 (3700mhz) make BSOD after some time. So next step is playing CPU voltage, I guess. Now I got some questions about ocing this... EDIT: i'll try to asnswer some of my own questions from experience so far: Should I OC this base clock above 200? or just increasing multipliers will be more beneficial and stable? Since it effect both HTT, NB and RAM speed too, while changing just multi I can control each setting individually. Or the point is to find the highest base clock for all + highest multi for all? Somehow rising the bclk and lowering the multi is more stable with the same final speed. So sometimes its better to mix and find the balance. Is there any point to OC NB and HTT anyway? Still not sure about HTT, but NB improove L3 chache and ram latency and bandwidth. In OverDrive there's NB VID and NB Core voltage. Should I bother with NB core? if yes what case? NB VID is the CPU/NB aka IMC, while the NB core is the one that connect CPU to PCEe and SB. SO this external NB and SB voltages are not important for main system OC. What about HTT voltage? What's voltage effect it, if any? Does AMD boards usually have option to disable vdroop, like I had on ASUS P5Q-Pro? I confused it with the fact that the actual voltage is abit lower than what you set, but its constant, and doesn't change with load or idle state. So its not counted as vdroop.