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E6750 GA-DS3L Overclock - Question

O

oldlore

n00b
Joined
Apr 13, 2006
Messages
14
I just put together my new computer a couple of weeks ago and finally have things stable enough to where I tried an overclock. I'm relatively new at this, have done minimal overclocks in the past but this is the "largest" I've tried so far.

E6750
GA-DS3L
Corsair XMS2 DDR2-800
Arctic cooling freezer pro
P180 case

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At 400FSB and RAM@800 I'm runnign Orthos for 2 hours (so far) w/o errors. My idle core temps were 31/33 and so far at load the most they've gone to is 51/52. The VCore was set at auto and is 1.35 in BIOS.

Now all I really want is 3.2Ghz, I'm ok with that. I just had a question or 2.

1. Everest and CPU-Z report higher VCores of 1.38 and 1.376. Does the BIOS keep adjusting these when left on AUTO and should I just manually set it to 1.35V? Update: I tried setting Vcore manually to 1.35 and orthos crashed <1minute. I then tried 1.356 and it crashed in 2 minutes. The thing is CPU-Z and Everest keep showing low Vcores of ~1.31, which doesn't make sense.

2. Everest shows memory voltage as 2.02V and my corsair xms2 is rated 1.8 I think. The motherboard automatically set DIMM voltage to +0.1V. Should I get rid of this since I'm still running the RAM at stock speed and timings?

Thanks for the help!
 
You are seeing a lower Vcore than set in BIOS due to Vdroop. I have a similar setup to you and in BIOS I have to set my vcore to 1.46 and after vdroop it reads as 1.42. This is necessary to reach to 3.5GHz. Auto works fine up to 3.4GHz for me, and I believe it does adjust the vcore based on your settings. Mine would top out at 1.43, or 1.39 after the droop... after that I had to manually adjust. I guess there is a built in cap to what auto will do for safety reasons.

The RAM should be fine. You could try manually setting it at 1.8 and see if it's stable. Anything up to 2.1 should be safe.
 
Ok I left the Vcore at auto and it seems to run fine for several hours, tops out at 1.37-1.39v on everest. I'm happy with 3.2 Ghz for now, at least until I can see if I even notice a difference in performance in everyday use :)

thanks for the reply!

P.S. Is Vcore a static # or does the BIOS dynamically adjust it on the fly depending on cpu load? And what is the safe limit for my CPU? The intel specs says 0.8-1.5, so is that where I want to stay?
 
The intel specs says 0.8-1.5, so is that where I want to stay?
Click to expand...
Yes, but I wouldn't do more than 1.45v. Personally, I wouldn't even do 1.4v (but that's a thermal issue on my side).
 
Keep it under 1.5v and watch the heat. As long as it isn't getting to hot a little more voltage won't do any damage.
 
I wasnt aware of any reports showing e6750 unable to reach 3.2 ghz at stock voltages. You must be the first.

Did you disable EIST? There is a guide in this forum that shows you have to overclock a core duo properly - I would suggest you start there. Usually there are 3 things to turn off in the bios before starting to overclock.
 
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