Which core and voltage to use?

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Which core and voltage to use?

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Author	Thread : Which core and voltage to use?

bluespawn

Profile: stranger

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04-28-2007 at 12:41:37 PM

Okay, just want opinions as to which of the temps and vcores I should follow.

e6300 @ 433 * 7 = 3032
mem @ 2.1
All other volts on Auto
Ambient = 23.7C

Question I have is, do I use the temps from which of these?

Asus Probe = 70
TaT = 62
CoreTemp = 66

Do I use the Voltage from which of these?

Asus Probe = 1.44
CPU-Z = 1.44
Bios = 1.525

At Idle 5 mins

Asus Probe = 49
TaT = 42/38
CoreTemp = 38/35

Do I use the Voltage from

Asus Probe = 1.5
CPU-Z = 1.213 (clearly wrong)
Bios = 1.525

To me it seems strage that with a Tt Big Typhoon, that I would get a full 30C increase from idle to load as shown in Asus Probe.

Also, heatsink and cpu have been lapped, nice and flat, and all on correctly with AS5

Opinions would be great.

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dr_kuli

Profile: enthusiast

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04-28-2007 at 01:18:29 PM

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Simply don't trust them. I'm using P5B-E, SpeedFan 4.32, offset -15C at Winbond Temp2. Asus Probe is way off, -15C at least.

EDIT1: Vcore is off in CPU-Z, if you set more than 1.45V in BIOS.

bluespawn

Profile: stranger

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04-28-2007 at 01:32:48 PM

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I'm really iffy about Asus Probe, if I take 15C off the temp, then I get a temp of 23 atm, this would be too cold for idle, as the ambient temp in the case is nearly 29.

It's strange, that at idle most of my temps are similar, it's when they get to load that all of the variation starts.

I just tried speed fan, CPU temp is reading the same as Asus Probe, 67C and Core 0 and Core 1 are showing 63.

I guess it's possible that it's really 63 + 15 so, 78, but this seems unlikely to me with a lapped heatsink, cpu etc. At the same time TaT is showing me 60 in each core.

I would like to think my temps were Tcase of 52 @ load with 1.525v but surely that would be unlikely wouldn't it?

Oh, I also have a temp probe in the fins of the cooler, currently showing 29.5.

Oh, i had also changed my speedfan core temps and gave them +15 as I thought this would represnt the TJunction better.

dr_kuli

Profile: enthusiast

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04-28-2007 at 01:52:28 PM

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Quote :

I would like to think my temps were Tcase of 52 @ load with 1.525v but surely that would be unlikely wouldn't it?

I've 1.4250V in BIOS, CPU-Z reads it 1.32 under Orthos P9 Small FFTs.

Quote :

Oh, I also have a temp probe in the fins of the cooler, currently showing 29.5.

Believe it.

Quote :

Oh, i had also changed my speedfan core temps and gave them +15 as I thought this would represnt the TJunction better.

Bad.
http://www.alcpu.com/forums/viewforum.php?f=35
In case you're too busy to read it all:

Quote :

According to one of the more interesting threads I've read in Intel's open Dev forums, a very unpleasant picture arrises. Desktop/Server CPUs DON'T have a constant Tjunction temperature, unlike many Mobile CPUs which contains the Tjunction information in bit 30 of MSR 0xEE. This value is either 85/100. Possibly by a mistake, this value seems to exist in the desktop processors as well, but this does not make it valid at all.

Quote :

TAT was developed for mobile CPU usage. The whole Tjunction minus DTSDelta was good for these CPUs(with small deviations of several degrees above or below), but it is basically useless for desktop CPUs. In desktop CPUs the calculation is PROCHOT# minus DTSDelta, and obviously we cannot read PROCHOT# temp.

bluespawn

Profile: stranger

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04-28-2007 at 02:10:30 PM

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Thanks for the quotes.

If I don't change the core temps in Speedfan, then it shows them as 15C lower than the CPU temp, which clearly cant be correct. Therefore speedfan just doesn't work with my CPU, MB combination.

dr_kuli

Profile: enthusiast

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04-28-2007 at 02:17:50 PM

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Quote :

If I don't change the core temps in Speedfan, then it shows them as 15C lower than the CPU temp, which clearly cant be correct.

CPU temp is read from some sensor (if any) Asus put on the mobo. It's NOT Tcase anyway. I've found SpeedFan 4.32 most believable.

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