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Limit?

post #1 of 14
Thread Starter 
Over the last few days I've been trying to overclock my e6420. I managed to get it up to 3.1GHz (387.5 x 8) @ 1.393vcore (1.35 VID/stock). However I cannot get it any further. The temp are fine, 47c max after a few hours in Orthos.

I tried 10MHz increments up to 3.15...nothing, tried upping the vcore all the way up to 1.443 on each increment but nothing. These allowed me to get past the BIOS screen but would freeze somewhere between there and loading windows fully. Also tried it at at 3.2@1.443v to see if there was a FSB hole but that wouldnt even get past the BIOS screen and I had to unplug it for a few mins to be able to reset the settings in the BIOS.

Is there anything else I can do? The only thing I can think of is upping the vcore further but I think 1.45v is the max safe for my chip. I read somewhere about uping the NB voltage but I'm not sure how this works. It's currently set at 1.393v which I'm pretty sure is stock. The next setting is 1.563v which seems quite high so I'm a bit scared about upping that, especially as I don't have any fans on the NB, just the stock heatsink, although the mobo temps (as reported in Everest and ASUS probe) are only 29c under full load (I presumt this is the NB temp).

Any advice short of buying more fans etc?
Thanks for any help.
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post #2 of 14
try upping the voltage slowly you should be able to get more out of that chip especially with good temps. If you can't seem too you could try upgrading to the new 09 bios. That helped me a little with my oc.
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post #3 of 14
i`d say up the NB voltage.
my NB runs at 1.60V without problems for 5 months now
so i think your safe.
and have you upped your FSB voltage as well?
and how about your ram voltage and timings?
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post #4 of 14
- FSB holes can be very large (some I've seen go from 450~499 FSB).
- Upping that NB voltage might/will help if you can keep it cool (under ~45C).
- 29C sounds more like the temps inside your case, so I doubt it's the NB (HWMonitor can probably find the NB temps as well as Everest).
- Up the FSB voltage (don't know if your mobo supports that tho).
- Also, do you run your memory linked?

EDIT: I'm a slow typer, got beaten twice
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post #5 of 14
Thread Starter 
Quote:
Originally Posted by Psycho666 View Post
i`d say up the NB voltage.
my NB runs at 1.60V without problems for 5 months now
so i think your safe.
and have you upped your FSB voltage as well?
and how about your ram voltage and timings?
The only voltages I can set (or that I can see in the BIOS) are vcore, memory, NB, and vcore offset.

My memory is set to 2.08v at 4-4-4-12 timings, FSB : DRAM = 1:1.
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post #6 of 14
Try loosening the timings a bit while your OC-ing your CPU (you can set them as tight as possible once your CPU is stable). Might need a bit more juice in your memory as well (what voltage are they rated at?).
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post #7 of 14
Thread Starter 
Thanks for all the quick responses

The ram is rated at 1.9v-2.3v.
I can't see a reading for my NB temp anywhere, below is a screenshot of Everest and hwmonitor running, maybe someone knows which is labelled what lol.



**edit** - Wattes; I'm running the memory unlinked, I might try upping the voltage on the memory but I might try do the NB first
Edited by pledgeX - 5/20/08 at 7:13am
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post #8 of 14
I had that exact mobo for that exact CPU before. I can tell you that I could not get 3.2 to boot for the life of me, let alone boot. I went straight for 3.4, took about 1.47 but it was 100% stable
post #9 of 14
Thread Starter 
Thats intersting Betrivent, I might have to try wack it right up when I get home. Can you remeber what your other settings were, NB voltage in particular?

1.47 seems quite high, I thought the max safe voltage is 1.45? Is it ok to go over this?
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post #10 of 14
Loose up your timings and increase NB voltage.. I'm about 100% sure that will work..

Ps. try setting every voltage manually
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