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Intel Core i5 750 Review - Overclocking Phase-Change vs LN2

CPU by massman @ 2009-09-13

Intel´s latest CPU is put to the test against their own Core 2/Quad and Core i7 series, as well as AMD´s Phenom II. We wrap up the testing with an overclocking session using phase-change and LN2 Cooling. Does the Core i5 and S1156 i7 impress? Let us find out

Core i5 overclocking: Air cooling

First up: Air cooling

For our first batch of overclocking results, we totally rely on the cooling performance of the Coolermaster V8. In the end, it seems that this ES chip was more than great up until 3.8GHz, but hitting the big 4 was a pain in the ... ehr. As for the BCLK overclocking, it seems that this particular sample was limited to 214.5MHz, even with subzero temperatures; mainly because the age of this particular ES sample: mine had a stepping of "905" (09, week 05), whereas all other ES samples are from week 16 or 18.

In any case, here are the first results:

(Click to enlarge)

(Click to enlarge)

Just ran the PCMark05 benchmark for reference; 21k certainly is fast enough to be considered a candidate as WR platform.

23K CPU score in Vantage - not bad, not bad!

2000CL7 was perfectly stable and actually quite easy to reach!

Comment from Massman @ 2009/09/13

As said: a lot more to digg into. Expect more overclocking action, more motherboards, more turbo mode testing, more memory testing ...

Much more

Comment from Diegis0n @ 2009/09/14

Great work PJ!

It makes me count my money and try to get a i5 platform

UD3 + 750: 277€, surprisingly affordable since i can sell C2 combo out for ~200.

I'll be ready for some action in a few months btw, lots of hardware will become "available"

Comment from Kougar @ 2009/09/14

Nice article... Looks like Turbo Mode will make subzero OC'ing rather interesting...

Quote:

just think about the secrecy with which AMD developed its new HD58xx series: so close to the launch and publicly no one has a real clue about its performance.

Spoke too soon.

Still, is a very valid point. The entire NDA situation with Lynnfield is not just absurd, it is plain stupid.

Comment from thorgal @ 2009/09/15

Seems you woke up someone at Anandtech LOL. One day after your article they present a clock comparison themselves

Comment from Diegis0n @ 2009/09/15

I well prefer PJ's writing skills; at least there's some nice pictures to look at

Comment from bartx @ 2009/09/16

Nice work. I like reviews from [M]

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