"So why is Ivy Bridge hot?"

[Divenow]

Is this bad? I guess i am a bit dissapointed.

Intel is using TIM paste between the Integrated Heat Spreader (IHS) and the CPU die on Ivy Bridge chips, instead of fluxless solder.

http://www.overclockers.com/ivy-bridge-temperatures

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

I just posted something about this in another thread.

Here is some more good read on this. http://www.xtremesystems.org/forums/...preader-Report

[profJim]

Re: "So why is Ivy Bridge hot?"

All the Ivy Bridge "toohot" cpu threads missed the point....
..... Intel has a sweetheart deal with home air conditioning manufacterers.

[profJim]

Re: "So why is Ivy Bridge hot?"

Check out http://forums.tweaktown.com/gigabyte...-included.html
There is a lot of useful information in the guide.

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

Check out [PCEvaluation] Intel i7 3770K Temperature Measured Without IHS

[ChaosMaster]

Re: "So why is Ivy Bridge hot?"

I read that review and this is what I thought of it (as posted on OCAU):

Hmm, very interesting, although that may not be the most accurate of testing. What I mean is that with the solder flux, the core is connected to the IHS using metal, which has a bigger surface area to touch the HSF via TIM, so more heat can be transfered. While in the case of the testing, sure the IHS has been removed, but then the surface area is also much smaller, and heat transfer is still through the same area size. The only difference it's really made is that there is only 1 layer of TIM instead of 2 layers. Where as with the solder flux, it would have doubled the surface area....

Hmmm, it's a bit hard to explain, let me try using numbers:
Assume Core area = 1, TIM transfer = 5w, Solder Flux = 50w, IHS = negligible

Stock = Core Area x TIM -> IHS x TIM -> HSF = 1 x 5 -> 2 x 5 (however as the core can only get 5w to the IHS, then the IHS can only transfer max 5w to HSF) -> HSF = 5w transferred
so max transferable heat is 5w due to the small size of the core area and the TIM's low transfer
Sandy Bridge way = Core Area x Solder->IHS x TIM -> HSF = 1 x 50 -> 2 x 5 -> HSF = 10w transferred
Note that the Core is able to transfer 50w to the IHS via the solder, and because the IHS area is easily more than twice that of the core, 10w is transfered or double that of using TIM.
In that review = Core Area x TIM -> HSF = 1 x 5 -> HSF = 5w transferred.
Of course, since we've removed the IHS and extra TIM, we've removed a layer of resistance, so it'll perform better than Stock, but still won't be anywhere as close to using Solder Flux.

The only reason I can think of why Intel has done this is because SB-E wasn't able to differentiate itself far enough from SB, so in doing this, Intel will be able to make IV-E (assuming they will use SolderFlux on the IV-E instead of TIM) the true enthusiast choice.

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

After keeping my eye on this thread over at XS 3770k IHS Removals - CPU temp dropped from 79C to 71C I am thinking about replacing the Intel stock TIM with some MX4 and dropping a 10c on my core temps. Just wondering if anyone else is thinking about it or willing to try it.

[wazza300]

Re: "So why is Ivy Bridge hot?"

you need to go for the best tim,mx4 isnt that great from my experience,not much better than arctic silver 5

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

well best or not from what I read anything is better then the intel crap. The best would be a liquid metal stuff. Maybe break off a piece of the indgo stuff.

As much as I really want to do it... Do I really need to? After solving my cooling issue (clogged jet plate in cpu block) I can safely push the system stable to 4.8 with ht off. If I did the mod and shaved 10c for what 200mhz more overclock.

It would be fun to do just see the temp difference.

[wazza300]

Re: "So why is Ivy Bridge hot?"

i wouldnt risk it if your on custom water and temps are fine,worth doing if on air though

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

Well I am back on x58 for now, I guess you were right wazza I should not have risked it. I could not resists the erg to pop the top off my 3770k. It was a pain in the ass but I did it and what I thought was no damage. Now cpu will not post, keeps getting error 51. If I remove all the ram it gets error 53. So I ordered a new one tonight probably wont get it till Tuesday. Really sucks having to drop another $330 on a cpu. I will not be touching the new one when it gets here, just hope it clocks as well as the first one did.

[wazza300]

Re: "So why is Ivy Bridge hot?"

ohhh no

have you checked socket for bent pins? any thermal paste anywhere on the cpu contacts ect or visible damage

maybe try heating cpu up slightly? not too hot though

[Acebmxer]

Re: "So why is Ivy Bridge hot?"

Yeah I am pretty sure the cpu is dead. I cleaned the cpu contacts, checked for bent pins. There are some scrapes on the the green board the cpu from me trying to get under the heatsink, I guess one of them might have been too deep or something.

[wazza300]

Re: "So why is Ivy Bridge hot?"

can you see any copper through the scrapes? if you could seal it maybe its shorting? clear nail varnish maybe? idk