yeh i just built my QX6700 system and i was resently asking the same question about my high temps on forums.overclockers.com.au and they pretty much told me that my high temps were ok,the QX6700 has 4 cores and runs really hot so i'd better get used off them i was told,so i just excepted the high temps,since even at high temps my system is really stable.
When i had my QX6700 overclocked to 3200mhz it was running at 80 degrees when i had that new version of prime95 running,that loaded all 4 cores,and even though i was told that 80 degrees is ok,it still doesn't seem right to me and i don't like those high temps,so now i run the QX6700 at default speeds of 2.66 and at full load with prime95 my temps are around 60 to 65 degrees which i am happy with i guess.
By the way i am using the big typoon vx to cool the cpu and i even added another 3 of these case fans to my stacker 830 Scythe S-FLEX 120mm Fan SFF21F
http://www.pccasegear.com/prod3652.htm and i still get high temps when i overclock,so untill i go water cooling i am leaving it at default speeds.
heres a screenshot when i only had the QX6700 ocerclocked to 2938mhz and it was running at 80 degrees,also i notest the longer you leave that prime95 the higher your temps will go up,mine peaks at 80 though.
And in the other screenshot you can see the highest it got was 66 degrees when it was running at default 2.66 speeds
tell you the truth though i don't think these QX6700 cpu's really even need overclocking,because they are fast enough,when i use dvd shrink to shrink an 8gig dual layer stawars episode 3 dvd when it was overclocked at 3200mhz,it would shrink the whole dvd in 2 minutes and 30 seconds (2.30) but when i set the QX6700 to default speeds of 2.66,it would only take an extra 30 seconds anyway,2 minutes 59 seconds (2.59),so with all the extra heat from overclocking i don't think you really get enough gains.
