Overclocking issue

[core2kid]

I'm overclocking a Q6600 G0 on a Asus P5K-E Wifi/AP Board. I have The Thermaltake Blue Orb II fan
http://www.bigbruin.com/review...?item=blueorbii&file=1
I'm currently at 3GHz with a CPU temp of 58C. My core temps on the other hand are:
Core0: 75C
Core1: 73C
Core2: 69C
Core3: 70C

Is this normal? Why are the core temps so much higher than the CPU temp?
My room temperature is 84F. I am using AS5 on the CPU.

 

[Candymancan21]

That heatsink is inssuficient i think. 1700rpm, and its originally designed for a Single core cpu. I could be wrong tho, try resetting it ? Maybe its not making good contact.


Oh and yes core temp means just that core temp, CPU temp is always lower because its not reading from the core of the cpu just the outside.

 

[core2kid]

Are those core temps bad? For being insufficient, even if it is insufficient, its still better than my last heatsink which was:
http://www.hardcoreware.net/reviews/review-234-1.htm

 

[BonzaiDuck]

You didn't say whether these are idle or load temperatures. I assume they are load. If that is the case, and your room-ambient is 84F, those temperatures aren't so terrible -- depending on your over-clock setting. If these are stock-speed and and voltage settings, then the temperatures should be lower -- even at 84F.

I want to be kind. But why are you spending money on these two heatsink-fan assemblies, when Anandtech had published several reviews through 2007 and later with a cumulative comparison of products that included quite a few heatpipe coolers?

Even the G0 stepping has a thermal wattage of 95W, and if over-clocked, the actual thermal dissipation would be higher than that. But the thermal resistance of coolers like the Ultima 90, some of the later Zalman heatpipe coolers, and several designs (like one from Noctua) that lay flat to the motherboard (if that was the reason you chose the ThermalTake) -- have thermal resistances low enough to keep your temperatures down.

By comparison, with either an Ultima 90 or TRUE cooler, I had my Q6600 B3 stepping (not as efficient as your G0) showing load "PRIME95" core temperatures averaging around 66C at near-80F room-ambient running a VCORE voltage as high as 1.42V and clocked to 3.2 Ghz.

But the "CPU" temperature you cite comes from the legacy TCase sensor, which is the basis for the processor's thermal spec. It is well within that spec -- if indeed you are citing your temperatures under load conditions. For the Q6600, it can lag behind the "core" temperatures by as much as 15C degrees, or something on the order of 10C (comparing to an average of the cores).

 

[error8]

Yes, when you overclock a 65nm Quad core, you just need the best air cooler out there, water is recommended. The heat that these chips are dissipating is amazing, once the voltage and clocks are cranked up. That Thermaltake heatsink is pretty pathetic. You would use that only when you are on stock clocks, otherwise is totally insufficient.

And put everything in order, when you measure your temps:
Use CoreTemp/RealTemp with Tjuction set manually at 90C. Any other program that uses another Tjuncion value gives wrong temps, for your particular cpu.
And tell us what program are you using to load your cpu.