Haswell Temps???

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Message 1442563 - Posted: 15 Nov 2013, 3:10:06 UTC

I just got an I7-4771 (84 watts) to replace my Phenom II x6 1090T. Testing as Keplerbox using Seti, I noticed that it runs a lot hotter than my Sandy Bridge - E I7-3820, which draws a LOT more power - 130 watts.

Running SETI on 7 of 8 virtual cores on both, I find the 4771 running perhaps 10-15 C higher using CPU Meter, which gives temps for all cores separately. They both have adequate cooling, so what's up with that? Is my Haswell going to have a significantly shorter life than the SB-E because of this?
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Message 1442565 - Posted: 15 Nov 2013, 3:36:45 UTC - in response to Message 1442563.  

Is my Haswell going to have a significantly shorter life than the SB-E because of this?

Ask this question in ten years or so.
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Profile Cliff Harding
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Message 1442568 - Posted: 15 Nov 2013, 3:55:36 UTC

I will ask the first very important question -- What are you using for cooling the CPU on both machines, air or LQS and are they sitting on the same level? Case size and fans are another factor. I have 2 i7s a 950 & a 930, both use a LQS for CPU cooling, have the same case and fan configuration. The biggest difference in the temps between the two is that the 930 runs cooler because it's sitting on the floor as opposed to the 950 machine which sits on my desk, a difference of 29 inches and a temp rise of 10 -15c depending on the weather.


I don't buy computers, I build them!!
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Message 1442570 - Posted: 15 Nov 2013, 4:48:07 UTC - in response to Message 1442568.  

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Profile James Sotherden
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Message 1442578 - Posted: 15 Nov 2013, 6:14:24 UTC - in response to Message 1442570.  

http://www.bit-tech.net/news/hardware/2013/06/06/haswell-heat/

http://www.extremetech.com/computing/157337-the-haswell-paradox-the-best-cpu-in-the-world-unless-youre-a-pc-enthusiast

Suggest you have a look at these. There are more articles around if you search.

cheers


That first link dose'nt look good for Haswell at all. And Intels response is lame.
[/quote]

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Message 1442616 - Posted: 15 Nov 2013, 10:15:14 UTC - in response to Message 1442563.  
Last modified: 15 Nov 2013, 11:14:05 UTC

I didn't have a look at Lionel's link (I'm sure they say everything I'm about to say) but general consensus (I have no personal experience with Haswell) from articles and comments around the web is that this is 'normal'. Haswell was a huge disappointment for enthusiasts unfortunately.

You'll have to search this 'cause I don't remember well but I think Intel cheaped out on the way they cover the chip*. Instead of solder they're using a fancy glue? I seem to remember some crazies stripping the casing and cooling the actual chip directly...

Edit: Another link
Intel Core i7-4770K CPU Review. Intel Haswell for Desktops: Ruin of Our Hopes?
(page 11 of a 13-page article)

*this may have happened/started on Ivy Bridge?
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Message 1442646 - Posted: 15 Nov 2013, 13:01:42 UTC
Last modified: 15 Nov 2013, 13:55:11 UTC

Actually, I think my MB has a defective socket - if I use a straightedge, I find that at the end near the hinge, the sides of the socket are (just barely) higher than the top of the processor. So the H50 I used first (that ran near 100C at full load) wasn't making full contact with the CPU. When I used a more robustly mounted air cooler (which squeezed the socket some when tightened) I got temps in the low 80s, still too high. Obviously not making strong contact with the CPU.

EDIT - DELETE: I will RMA the MB at Newegg and see if I get a better socket.

EDIT - ADD: Looking at the stock HSF that came with the CPU, it has a large flat aluminum base with a round copper insert to make contact with the CPU. That insert a) is smaller than the hole in the socket and b) sticks out a small fraction of an inch. So it fits within the socket, unlike almost any other HSF, which would have a larger contact surface than the hole in the 1150 socket. So maybe that is by design?

Maybe I will add a copper shim between the HSF and the CPU (with TIM on both sides, of course). Is that a good idea? /EDIT
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Message 1442853 - Posted: 15 Nov 2013, 22:19:05 UTC - in response to Message 1442568.  

I dry my laundry in my computer room...
To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones
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Message boards : Number crunching : Haswell Temps???


 
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