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Is 1.3V a little high for 3.6Ghz on a Core i5 750?

post #1 of 12
Thread Starter 
1.3V so far the lowest voltage my cpu is stable with, would there be an other way to increase stability at a lower voltage?
I can post all of my bios settings if needed.

Help is much appreciated
    
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post #2 of 12
Thats what I have my voltage set at for 4.0ghz, but every chip is different. Have you tried raising the speed at that voltage?
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post #3 of 12
Thread Starter 
I can try, but I don't know if it will work since 1.3V, as I said, is the lowest stable voltage it can achieve for 3.6Ghz. I might try 3.8Ghz and see how it fairs.
I'll post here after on how it turn out.
    
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post #4 of 12
is it 1.3v in cpuz or in bios? its high either way, but it would be worse if its in cpuz.
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post #5 of 12
Thread Starter 
In bios I set it at 1.31V; in cpu-z it shows 1.296V and in Speed Fan it shows 1.30V

I do have Load Line Calibration, and Intel Speed Step Enabled.

EDIT: BTW I forgot to mention I tried 3.7Ghz with that voltage (19v195) and it failed prime 95 after 15 minutes.
    
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post #6 of 12
that is WAY to high imo. i know i have a different chip but i can run 3.6 at less that 1.1v
    
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by microman View Post
that is WAY to high imo. i know i have a different chip but i can run 3.6 at less that 1.1v
:O

Can I ask you a few questions then? Do you have Load Line Calibration or Intel Speed Step Enabled? And did you change your PCI-E Frequency?
    
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post #8 of 12
When you're crashing what error codes are you getting. All that crashes is not necessarily vcore. That is a lot of juice for 3.6.

As for speed stepping it will definitely invite instability- but will be more efficient of you can get it stable. Not something too many who are overclocking are worried about.

I wouldn't be changing pci-e voltages either. I'd like to know some of your other settings especially qpi and whether you dorked with your ram timings. Also, your ram frequency.
Edited by Eno75 - 1/28/11 at 8:02pm
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post #9 of 12
Quote:
Originally Posted by toxaris71 View Post
:O

Can I ask you a few questions then? Do you have Load Line Calibration or Intel Speed Step Enabled? And did you change your PCI-E Frequency?
Off topic, but whatever you do, DO NOT change your PCI-E frequency. Have a mess with your RAM (run it at lower than stock), and your Intel equivalent of northbridge/southbridge.


again, DO NOT change your PCI-E frequency, it will overclock your hard drives, and they will burn out in a fireball, and or corrupt your data.
post #10 of 12
Quote:
Originally Posted by Eno75 View Post
When you're crashing what error codes are you getting. All that crashes is not necessarily vcore. That is a lot of juice for 3.8- I didn't notice if you were D0 or C0 stepped.

As for speed stepping it will definitely invite instability- but will be more efficient of you can get it stable. Not something too many who are overclocking are worried about.

I wouldn't be changing pci-e voltages either. I'd like to know some of your other settings especially qpi and whether you dorked with your ram timings. Also, your ram frequency.
his chip is a lynnfield not bloomfield. stepping would be b1 not d0 or c0

keep speed step enabled. i hit 4.1ghz on my lynnfield with ALL powersaving features enabled and im 16 hours p95 stable.

however disable turbo boost.

what kind of crash are you getting in p95? is it a rounding error? hardware failure? bsod? warning?

also make sure your memory is at stock speeds/timings or less.

as others have mentioned, all chips are different. it very well could be that you have reached the maximum frequency for that given voltage.

anything more than that will require more information on your settings.
Edited by AliceInChains - 1/28/11 at 8:07pm
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