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E8400 and CoreTemp

The v droop seems correct.

For example my chip at 4Ghz = 1.4v Idle and goes to 1.368v load.

I also noticed temps don't seem to move at all with these chips, they're really cool :D
 
I'm using Speedfan and going on the CPU socket temp. With my watercooling kit, all my core2 cpus have idled approx 7 to 10c above the ambient room temp (usually 21 to 25c), so I've used the configure/advanced options in speedfan to add that amount to what it's reporting.

Interestingly, Speedfan doesn't report any core temps on my motherboard/cpu combo, so to find out which one was the 'CPU', I just loaded the CPU with Super PI 32MB and watched to see which temp went up! The one that was being reported as CPU was at 45c, and didn't move, just the same as on coretemp.

As I say, not ideal, but good enough for me to use as a base to see what voltage and overclocks do to my temps.

EDIT: I've just installed Speedfan 4.34 Beta and now Core Temps are reported, but they're exactly the same as Coretemp, and don't move under load...
 
Last edited:
Updated my bios and my idle temps look more realistic than 17c now:

idle763x634tl7.jpg


Load temps:

load762x631kk8.jpg
 
I remain to be convinced! :)

It might be the cure for some problems, but I'm not sure how the bios can impact what temps are being reported by thermal resistors in the core of the CPU?

I can see how a bios upgrade might change the reported socket CPU temp, as that's calculated via an algorithm I believe, so they could change that.

But what makes me believe it's a CPU issue is that no bios updates with any of my Core2 CPU's (and I've had a few!) have ever changed what's reported by Coretemp and/or other software that reads the thermal resistors.

I hope I'm wrong, and that a bios update does fix things, but I'm not hopeful...

@ Deluxe1, was Coretemp 'broken' before the bios update?
 
Tooks said:
@ Deluxe1, was Coretemp 'broken' before the bios update?
Click to expand...

Coretemp readings havent changed since my bios update,they still seem to be stuck on 45c whilst idle.

Speedfan and the rest have,i used to get 17c for my idle temps,i`m still not %100 sure what to believe tho concerning my temps.
 
Tooks said:
I remain to be convinced! :)

It might be the cure for some problems, but I'm not sure how the bios can impact what temps are being reported by thermal resistors in the core of the CPU?

I can see how a bios upgrade might change the reported socket CPU temp, as that's calculated via an algorithm I believe, so they could change that.?
Click to expand...

Because the BIOS is still the Input, Output system. It can be innacurate still.

My temperatures changed around 5c on Core Temp when Asus tweaked the CPU temp readout with a new bios :).
 
Deluxe1 said:
Coretemp readings havent changed since my bios update,they still seem to be stuck on 45c whilst idle.

Speedfan and the rest have,i used to get 17c for my idle temps,i`m still not %100 sure what to believe tho concerning my temps.
Click to expand...

I see now.

At least you've got a 15c range of movement reported by Coretemp, mine is more like 6c. Reported idle temps are the same as yours though.

All the core reading software I've tried shows exactly the same, and TAT won't even run.

Looks like Speedfan for me then, although I think the bios temp is optimistic so I've reconfigured it to be on the high side.
 
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