3770K IHS removal and results

[OneMoar]

you got balls of steel to take a razer blade any-ware near a ~300 dollar proc

 

[Nordic]

you got balls of steel to take a razer blade any-ware near a ~300 dollar proc

Agreed.
Especially since there is so little info on if their are any benefits to it.

 

[OneMoar]

Agreed.
Especially since there is so little info on if their are any benefits to it.

heres hopeing he will put the issue to rest I would like to see him try and install the cooler without the IHS just to see what the temps would be

 

[Nordic]

Instead of using the already good noctua, would it of been better to use the stock heatsink. The differences would be more visible. Or would the lack of ability to overclock higher negate that benefit?

 

[hat]

heres hopeing he will put the issue to rest I would like to see him try and install the cooler without the IHS just to see what the temps would be

That would require removing the lock-down bracket seat thing for the CPU... not sure how well that would go over.

 

[OneMoar]

That would require removing the lock-down bracket seat thing for the CPU... not sure how well that would go over.

or cut a hole in the IHS > exposing the core

 

[graysky]

you got balls of steel to take a razer blade any-ware near a ~300 dollar proc

Agreed.
Especially since there is so little info on if their are any benefits to it.

Yeah, it was $340 and that to me, was the price of knowledge I suppose. Isn't the hallmark of science the ability to independently reproduce an experiment's result? Plus, I wanted to share details with the community so others could do the same.

heres hopeing he will put the issue to rest I would like to see him try and install the cooler without the IHS just to see what the temps would be

Yeah, that ain't gonna happen

 

[natr0n]

Ive de-lidded a few socket 939. I would always directly cool the core, not puttting the ihs back on.

you get much better temps that way.

 

[Widjaja]

Ive de-lidded a few socket 939. I would always directly cool the core, not puttting the ihs back on.

you get much better temps that way.

Yeah I've done the same with an 939skt.
But with those CPUs it was one of the in things to do.
I never got the shims right though so I did the same as the OP and just applied AS5 to the die and resealed the IHS with some stuff which is used to seal car windshields.

Back on topic, it appears the stock TIM may have been applied poorly according to the results which is a concern.

 

[radrok]

Subbed, thanks for all the data in here.

 

[hat]

or cut a hole in the IHS > exposing the core

The bracket would get in the way. The heatsink won't make contact with the core.

 

[graysky]

I updated the first post of this thread with new results having lapped both the IHS and the base of the heatsink. They start under the section entitled, "Part 2."

 

[Ikaruga]

well done, thank you!

 

[graysky]

I was able to drop my vcore offset from +200 mV down 150 mV to +5 mV and have a stable system as evaluated by: 5 h of mprime large/FFTs, 2 h of continuous compiling, 2 h of systest 64M, and 2 h of linpack+gcc. Lower operating temps have their tangibles. This is @ 45x100. I'll now switch over to 47x100 to see if I can drop the vcore by a proportional amount and might try 48x100. Just wanted to update.

 

[cadaveca]

I updated the first post of this thread with new results having lapped both the IHS and the base of the heatsink. They start under the section entitled, "Part 2."

Thanks for the awesome write-up and work. Seriously, thanks!

 

[m1dg3t]

Thnx again graysky! Nice to see the temps remaining level/stable, I guess it was just a couple cases of operator error. I should hopefully have the rest of my parts by the end of this week or next so I can finally get crackin' on my build

Delidding > Good
Lapping > Not so good

Any plans to test other TIMs?

 

[Nordic]

After a quiet difficult google search...
http://foro.noticias3d.com/vbulletin/showthread.php?t=391334
Another person tested with multiple tims.

 

[m1dg3t]

I know there have been other tests, thanks

Graysky seems to have testing/collecting/presenting down and free of bias, thats why I asked. Plus it's nice for our community to be doing this stuff as well

I don't like going out of the forum if I can help it, there used to be some serious dudes around here but not so much anymore? Things seem to be picking back up a lil' in that area so hopefully it continues

 

[Nordic]

I know there have been other tests, thanks

Graysky seems to have testing/collecting/presenting down and free of bias, thats why I asked. Plus it's nice for our community to be doing this stuff as well

I don't like going out of the forum if I can help it, there used to be some serious dudes around here but not so much anymore? Things seem to be picking back up a lil' in that area so hopefully it continues

I agree on all of that. Just thought some people might like to read it.

 

[graysky]

@m1dg3t - Been thinking about using liquid pro on the die but that stuff fuses surfaces together which probably means it would be the last time I did anything to the die so I won't be doing that. I'm pretty satisfied with my results as-is. Interestingly, the lower offset (-150 mV) only translated into -1C drop across cores:

Squares are the offset of +0.020 V and circles are the offset of +0.005 V.


Here are a few visuals on the VID distributions. Remember, my script is sampling 30 times/sec and that on day 4, I dropped the offset by -150 mV:


Here it is in terms of raw counts: