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Cracking line on i7 960 die

post #1 of 43
Thread Starter 
Hey guys, I removed the IHS of my i7 960. Since the corners seem lower than the center, I polished it with sandpaper.

After some polishing, a thin line appeared on the line, look like cracking. I drop it into the socket it's still functional so I continued polishing it.

Dannn! Another cracking line shown up, even bigger than the first one. I almost got the die flat so I didn't continue... The processor still works though.

My question is, does the cracking affect overclock to higher frequency, cause I have big difficulty to get the 960 to 4.1Ghz, which I thought should be pretty easy. Does anyone have similar experiences?





Edited by foxrena - 7/17/11 at 9:58pm
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post #2 of 43
You sanded the die itself!? I... could be wrong, but I thought that was the exposed CPU itself. I might be wrong, because surely if you were sanding it's transistors, it wouldn't work? Maybe there's a bit of a layer it's under?

It's hard to say unless you have comparisons of how it reacted to the same overclock attempts before you did this to it.
post #3 of 43
Are you unable to get the same OC you had before lapping? Some chips just like voltage, try upping VTT if VCore doesn't seem to get you stable.
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post #4 of 43
Thread Starter 
Quote:
Originally Posted by Princess Garnet View Post
You sanded the die itself!? I... could be wrong, but I thought that was the exposed CPU itself. I might be wrong, because surely if you were sanding it's transistors, it wouldn't work? Maybe there's a bit of a layer it's under?

It's hard to say unless you have comparisons of how it reacted to the same overclock attempts before you did this to it.
Yes, I would love to have that comparison, too. I removed the IHS before I put it into the machine. So... I don't have a comparison. I kind of regret it now...
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post #5 of 43
YOU SANDED THE DIE?????



Please tell me you're joking!

Also, if it still works, let it be. 4.1Ghz isn't too bad with those CPUs.

Sandybridge based CPU's are what go to 4.5+ easily You don't have that.
 
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post #6 of 43
Thread Starter 
Quote:
Originally Posted by djk11 View Post
Are you unable to get the same OC you had before lapping? Some chips just like voltage, try upping VTT if VCore doesn't seem to get you stable.
I have tried VTT up to 1.35V on my motherboard. I don't know if higher voltage would hurt the system.
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post #7 of 43
No guys you're reading his post wrong, he removed the IHS and polished that. NOT the die. And pics wouldn't hurt
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post #8 of 43
Quote:
Originally Posted by foxrena View Post
I have tried VTT up to 1.35V on my motherboard. I don't know if higher voltage would hurt the system.
1.35V is Intel's recommended max for VTT, but its not uncommon to need up to 1.4V. What BSOD codes are you getting?
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post #9 of 43
Quote:
Originally Posted by foxrena View Post
I have tried VTT up to 1.35V on my motherboard. I don't know if higher voltage would hurt the system.
I've been running my VTT at 1.43 for near 3 years now, CPU is fine.

I think it has to do with the distance between VTT and vDIMM... Might wanna read up on that cus IDK for sure.
 
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post #10 of 43
Thread Starter 
Quote:
Originally Posted by TitaniumClocker View Post
YOU SANDED THE DIE?????



Please tell me you're joking!

Also, if it still works, let it be. 4.1Ghz isn't too bad with those CPUs.

Sandybridge based CPU's are what go to 4.5+ easily You don't have that.
Haha, I thought the top layer should be pretty thick. Sanding it down should help the temperature.

I'm a little disappoint cause my i7 920 can do 4GHz at a low voltage. The only advantage now with this 960 is that it puts out less heat at the same clock.
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