Real Temp - New temp program for Intel Core processors

[unclewebb]

I'll have a look at this and go back to the old timing system if I have to. It used to be very accurate as long as you did all your overclocking from the bios but the stop watch I was using also got overclocked when using SetFSB from within Windows. I'm sure I'll find a way to get it working consistently no matter how you like to overclock.

ChrisZ: Here's some of the data you sent me so others can follow along.

00:36:42 54 54 45 48
00:36:43 54 53 44 48
00:36:44 53 53 45 48
00:36:45 54 53 45 48

As before, core0 and core1 are tracking each other very well but there is something strange going on with the other two. During the last couple of pages a few of us have noticed the exact same thing with our Quads. In theory, 4 cores all running the same MHz and core voltage and doing the exact same thing running Prime should all be very close to the same temperature. We started thinking that maybe Intel is setting TjMax 5C higher on core2 and core3 but not just on your Quad.

I pushed my Quad much hotter and this is what I got:



An exact 5C difference as I was approaching TjMax. Idle calibration has no effect at this temp.

Then there is Ace-a-Rue.
http://www.xtremesystems.org/forums/...&postcount=632

An exact 5C difference on his QX9650 at full load.

and then there is Nevrsadie. He re-did his heatsink and he started getting the same thing. His cores are presently the same in this screen shot but look at his maximum temps.

http://www.xtremesystems.org/forums/...&postcount=655

There is definitely a pattern here but why?

Just when I thought Intel might be messing with our minds by using two different TjMax values in the same Quad, I went back and had a look at some of my original testing which I posted here:

http://www.xtremesystems.org/forums/...&postcount=568

At idle and without a heatsink attached to my Q6600, core0 and core1 are tracking each other exactly and core3 is now only 1C less which is very normal.

The act of tightening the heatsink or water block might be causing uneven pressure on the IHS and the two dual cores that lay beneath it. Does excessive or uneven pressure on the IHS effect the data coming from the on chip DTS sensors? Definitely an moment. I'm generally the type to find a big pipe wrench when it's time to snug down a heatsink so maybe I need to take it easy next time. Next test; run Prime with a loose heatsink and snug until the temps go a little wonky on core2 and core3 then back off half a turn on each screw and it should be perfect.