I am seeing 3 year 1-to-1 warranty label on my i7 920 box. I wonder who is the distributor in case I needed the warranty. It could be time to push my i7 to the brink

Haha, my i7 is still fine. Haven't killed it by attempting 4GHz on stock cooler yet, although it reached 90C.

Since i7 930 has superseded i7 920, I could have done something for an upgrade. Oh well.. it's just feels too bad to do so.

If it overheats to be dead, probably there would be irremovable marks that can invalidate warranty right? Not a good idea

Bah, bad idea. I'll just live with the faithful i7 920. It is so tough that it can take any abuse.

Last time you guys have told me that turning on HT will decrease Linx Gflops. Last time I'm just using low core clock and HT does give higher Gflops. Now I clocked to 3.4GHz, using HT reduces the Gflops by 10. Lol...

If voltage would affect Gflops, does it mean that an undervoltage, can cause more errors but just that the error is self-recoverable within the processor?

We need semicon engineer to explain about this though.

This post has been edited by mengsuan: Oct 19 2010, 02:56 PM

I assume optimal Vcore is varying according to core speed?

If lets say 1.15V is optimal but 1.10V is already enough for stability; would 1.15V produce lesser heat since it should be efficient?

Ok, good. I'll search for optimal Vcore.

AT 3.36GHz@1.05V, the core temperatures are already at 86C. Lolz. I think I can't go much further with stock cooler.

Eek. 3.6GHz is just 2C higher. Stock cooler or ...?

C0, HT on, 3.6GHz, 1.176V:

Your screenshot makes me think that my heatsink is running abnormally. Mine is D0, HT off, 3.36GHz, 1.05V.

This post has been edited by mengsuan: Oct 21 2010, 01:24 PM

Goes up to 89C at 3.6GHz@1.10V (BIOS) without HT.

The core temperatures look quite imbalanced. First I thought was bad mounting but I already pushed it very well in.

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Added on October 22, 2010, 1:49 pmTried 3.6GHz HT on. Very disappointed with the temperature when compared to cstkl1's rig. My uncore speed is already lower than his but yet so much hotter.



This post has been edited by mengsuan: Oct 22 2010, 06:32 PM

Yes. Stock HSF

I'll reseat the heatsink and clean the fans tomorrow. The noise is echoing my house.

My computer had total freeze without BSOD. Returning to stock voltage and clock will still give random freeze. I deteriorated the processor/motherboard? It can still pass Linx and Folding@home as long as possible until random freeze occur again.

No BSOD=No logs. No idea what caused instability.

This post has been edited by mengsuan: Oct 24 2010, 03:55 PM

Updated Linx with latest linpack. Lets see if I can squeeze out errors that were never detected.

1.3V for 3.4GHz is high. I only used 1.00V for 3.3GHz.

I replaced stock cooler with Hyper 212+.


This is before replacement. Exact same settings.

That's very cool. What cooler are you using? Is your i7 HT on or off?

I'd to agree. I'm using the same 3.6GHz @ 1.1V instead of 1.2V. Yet he has 10c lower.

If default then HT on. You have good temperature. No worries, clock them up!

LN2 cooling will go very well with 1.5V settings.