clocks and temps differ c2d 6600 running 3600MHZ or 3200MHZ

[nordle1]

Hi, can anyone shed some light on what's going on?

Intel Core2 E6600 on a Gigabyte GA-965P-DS3 (Bios F7), entered BIOS and changed multiplier to 8 and fsb to 400 (no voltage adjustments).

Booted into WinXP and using these apps it shows different temps and clocks.
Reading up, I can see the temps may be down to the different sensors used.
But what about the clockspeed, I assume Im not running 3.6GHZ!!

I cant be running a 450fsb!

Any advice would be great, many thanks.


coretemp 0.93
cpuid 1.36
easytune5 build 2006.08.25
speedfan 4.31

I posted this in CPU's earlier, because software readings is not specifically overclocking. But when I thought about it, I figured it was more suited in this forum.

Since then, I've noticed something very weird. Prime95 failed when running two seesions, so I went back to BIOS and changed to 9x320 instead of 8x400
Now all the apps have the correct clock speed reported, and prime95 is running well in dual. So was I running 450!!!! or was it just crappy software which assumed a 9x multiplyer and hence the 3.6GHZ.

Thanks again + apology for repost, hopefully more correct area.

 

[nordle1]

Thanks for reply.

From what I've read, the BIOS reads the external sensor where as CoreTemp reads the internal cpu temp, so I'm happy with the 10c difference.

EZTune is correct, the fan speeds are 800rpm and 700rpm usually, that is what the BIOS sais and visually I can see it hardly spins and the heatsink is always cold.

The BIOS sais a multiplyer of between 6 and 9 is allowed, and BIOS option C1E relies on the ability to clock back to a multiplyer of 6 during halt cpu signals.

I've clocked it back to 320x9 instead of 400x8 just in case.

But whats confusing is that although both eztune and coretemp show 3.6GHZ, they appear to show it calculated differently eg
eztune implies 400x9 (it states 400x8, but shows 3.6 not 3.2)
coretemp implies 450x8 to equal 3.6

cpuid is the only one which matches what I placed in the BIOS, so it must be right!?? I mean, I doubt the XMS2 DDR2-800 RAM would have posted if the fsb was truly 450. Although if it was 9x400 then I guess it would, but I would be surprised to see the cpu still remain cool at 3.6ghz with a 800rpm fan!