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Overclocking my i5 750 - Page 3

post #21 of 33
Quote:
Originally Posted by mtbiker033 View Post
I guess I have a sweet chip and I know my board is uber but I'm at 3.6 with 1.1375v in bios, with vdroop control on at full load it's 1.164v. Vtt is 1.2v.
Me too... 3938B002.....4.451 1.275v 24/7
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post #22 of 33
Haha 1.164 is what my chip vdroops to at stock settings, pretty amazing voltages you've got. Now I want to see what you get at 4.0
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post #23 of 33
mine is: L931B674

I will probably give it a go at some point but for now, I'm loving the low temps and good performance as it is at 3.6. It's such a big jump from my C2D set-up that I feel set where I am (for now lol!).
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post #24 of 33
Thread Starter 
Quote:
Originally Posted by melnd View Post
Me too... 3938B002.....4.451 1.275v 24/7
Dang... my i5 needs around 1.37 core and 1.27 IMC at 3.8 just to be stable...

I'm currently testing it right now in prime95 and this might be the stable voltage for it... 4ghz needed 1.43V and it would still crash after 15 mins :0
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post #25 of 33
Thread Starter 
prime 95 failed after an hour, i'm upping the core to 1.38...
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post #26 of 33
Quote:
Originally Posted by AC_Smoothie View Post
Dang... my i5 needs around 1.37 core and 1.27 IMC at 3.8 just to be stable...

I'm currently testing it right now in prime95 and this might be the stable voltage for it... 4ghz needed 1.43V and it would still crash after 15 mins :0
Melnd was talking about his 920, they're beasts for overclocking. Then again so should i5s, I guess it's just hit or miss with these batches.
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post #27 of 33
Thread Starter 
Quote:
Originally Posted by Salami991 View Post
Melnd was talking about his 920, they're beasts for overclocking. Then again so should i5s, I guess it's just hit or miss with these batches.
Yepp, when i had my i5 at 3.4ghz, i got similar results in cinebench to a i7 940 which is pretty good but when i get this stable at 3.8 i wonder how close i'll get in performance to the i7 965
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post #28 of 33
Thread Starter 
Are 9-10-10-27 @ 1440MHZ decent or should i lower them a bit, would that cause any instability with the OC?
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post #29 of 33
I think, well am guessing that VTT is tied with ram timings / speed, I kept mine at it's rated speeds / timings / voltage to keep my VTT down, in your case however if you can get your VTT down further with some looser timings I would go for it.
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post #30 of 33
Thread Starter 
Quote:
Originally Posted by Salami991 View Post
I think, well am guessing that VTT is tied with ram timings / speed, I kept mine at it's rated speeds / timings / voltage to keep my VTT down, in your case however if you can get your VTT down further with some looser timings I would go for it.
Hey, just changed the timings to 9-9-9-24 and i'm testing again with OCCT for stability, it's been 20 minutes in and no problems, temps are around 70-75 and core voltage at 1.38 i think i might have hit the sweet spot.

3.8ghz though..
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