Q9550 vs i5-750 which chip runs hotter?

Kenmitch

Diamond Member
Oct 10, 1999
8,505
2,250
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I should get my i5-750 today and am planning on booting her up tonight :)

I was just wondering if I'm gonna be in for a temp shock or not. I see alot of posts with what I would call very high load temps running an overclocked i3,i5,i7 setup.

With a similar clock and vcore which chip produces more heat?

My water cooling setup tamed the Q9550 @ 4.02ghz(1.30 vcore) OCCT temps mid-upper 50's C durring stress testing. OCCT,IBT,etc.

For ref when I downclocked the Q9550 to 3.6ghz the hottest core was 45*C with water. When installed the stock cooler and quick tested the temps shot to the 80's C so I'm thinking the system works pretty good.

Not sure how high the i5-750 will overclock. I guess once stable I'll try a 3.6ghz run just to compare the temps myself. My goal for the chip would be in the 4ghz range.

Edited part
Booted up last night or early this AM depending on how you look at it. It seems that the thermal qualities of the new chip are very similar to my old one. Temps looked pretty good last night. I didn't do much testing yet as it was kinda late. Once I do a fresh install of Win 7 and get her stable I'll do a temp comparison for those whom may be interested.

Thanks
 
Last edited:

MrK6

Diamond Member
Aug 9, 2004
4,458
4
81
Well, given they're the same TDP and same process, they should generate similar heat output. However, the i5 750 has the advantage of much more aggressive power saving features, and can downclock and utilize cores individually, among other abilities. If you overclock while leaving these features enabled, you should have a cooler running chip, especially at idle and during general usage. Either way, 4GHz on the i5 750 should be easy with a water cooling. Your limiting factor is going to be your BCLK because of the VTT restraint (1.21V), which you might be able to stretch considering the cooling (don't quote me on it though, I'm not sure of the repercussions).