vcore query

BluSky

BluSky

BluSky

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Joined
15 Nov 2011
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1,237
Hi all, I am hoping to pick your brains about my overclock.

I have a q6600 g0 with an unfortunate vid of 1.3250. Consequently it takes a bios CPU voltage setting of 1.45v to get it stable at just under 3.2ghz. I use occt for stress testing. I am not willing to go beyond an actual vcore of 1.45, so here is my question:

occt is reporting a vcore of 1.4v, and the bios is set to 1.45. I know this is due to vdroop / vdrop but my question is does that mean the processor is only ever getting 1.4v? And does that in turn mean I have more voltage headroom for a further oc?

Thanks in advance
 
Its due to vdrop rather than vdroop. Many people here have run fine up to 1.5v in BIOS (temps allowing), myself included (1.28v VID).

Have you raised the NB voltage first?
 
I thought 1.45 was the recommended max? Currently my max core temp on linpack is 60c... How much higher do you think I can go?

Because I don't have a total understanding of what all the settings do, I tend to leave other voltages at auto. I am not sure what safe voltage for the northbridge is? I have also read a bit about pll voltages but I don't really get that either and could do with a plain Englishexplanation. I am learning as I go.

Thanks
 
Oh that reminds me, regarding temps, I measure using a combination of occt, realtemp and core temp.by default they are configured with a tj max of 100c, and at those default settings they all report much the same temperatures. The actual tjmax, as quoted by Intel, for my processor is 90c. I have therefore set the tjmax in real temp to 90c to reflect this. Consequently it now displays temps 10c lower than the other 2 (roughly). My question is... As these temps are based on my actual th max are they the ones I should trust?

It is worth noting that the new, adjusted, real temp readings match the readings shown in the bios.

Thanks again!
 
Dosen't matter what your temp says, just try to stay about 20C off your Tjmax when loaded with IBT etc.. so 80C for 100C Tjmax and 70C for an adjusted 90C Tjmax. I don't really look at the temp readout, only the distance to max.
 
Justintime said:
Dosen't matter what your temp says, just try to stay about 20C off your Tjmax when loaded with IBT etc.. so 80C for 100C Tjmax and 70C for an adjusted 90C Tjmax. I don't really look at the temp readout, only the distance to max.
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Thanks, that's good to know. Any suggestions about my voltage query?
 
To be honest, software readouts on voltage are iffy at best. Only way is to measure voltage with a properly calibrated multimeter at the proper point on the motherboard. Its probably within the ballpark. I usually stopped at 1.5v with Q6600, they're tough bastiches but rather hot, if your temps are ok then 1.5v bios should be fine, assuming the software readout is within reason, it might be slightly under 1.5v in reality.

Increasing the NB volts might help, mostly with higher fsbs but with certain boards and chipsets also help when clocking a quad, it might for e.g do 400fsb with a dual but only do 380mhz with a Quad, few notches up on the NB volts might make 400 a reality.
 
Justintime said:
To be honest, software readouts on voltage are iffy at best. Only way is to measure voltage with a properly calibrated multimeter at the proper point on the motherboard. Its probably within the ballpark. I usually stopped at 1.5v with Q6600, they're tough bastiches but rather hot, if your temps are ok then 1.5v bios should be fine, assuming the software readout is within reason, it might be slightly under 1.5v in reality.

Increasing the NB volts might help, mostly with higher fsbs but with certain boards and chipsets also help when clocking a quad, it might for e.g do 400fsb with a dual but only do 380mhz with a Quad, few notches up on the NB volts might make 400 a reality.
Click to expand...

Thanks, that helped a lot. I will creep towards 1.5v and see what I can get out of it. Got a feeling whatever I do 3.3 will probably be my limit... not a bad improvement. If I can get 3.2 stable 24/7 I will be happy
 
BluSky said:
Thanks, that helped a lot. I will creep towards 1.5v and see what I can get out of it. Got a feeling whatever I do 3.3 will probably be my limit... not a bad improvement. If I can get 3.2 stable 24/7 I will be happy
Click to expand...

Yea oddly enough i found it was the last batches of Q6600 that were cruddy, barely 3.2-3.4GHz out of them with 1.5v when older batches easily did 3.6 with less than 1.45v etc.. Recently sold a machine with a Q6600 that someone abandoned (!) at my place, haven't heard from them for 5 months now and mobile has been off for 3 months, all it needed was a new hdd lol. Good luck if they come now as i'm charging storage lol. I noticed it was a low vid 1.225v or thereabouts chip and clocked to 3.73Ghz on 1.4125v, VERY cool runner with 77C tops with a TRUE with LINX and all of the cores were within 2C of each other, very rare, almost the perfect Q6600! Too bad it was sold at stock speed, 2yrs ago it'd have been lovely to have :)
 
Justintime said:
Yea oddly enough i found it was the last batches of Q6600 that were cruddy, barely 3.2-3.4GHz out of them with 1.5v when older batches easily did 3.6 with less than 1.45v etc.. Recently sold a machine with a Q6600 that someone abandoned (!) at my place, haven't heard from them for 5 months now and mobile has been off for 3 months, all it needed was a new hdd lol. Good luck if they come now as i'm charging storage lol. I noticed it was a low vid 1.225v or thereabouts chip and clocked to 3.73Ghz on 1.4125v, VERY cool runner with 77C tops with a TRUE with LINX and all of the cores were within 2C of each other, very rare, almost the perfect Q6600! Too bad it was sold at stock speed, 2yrs ago it'd have been lovely to have :)
Click to expand...

Yeah seems like I have just been a little unlucky with my chip... still a 30% or more overclock is nothing to scoff at :). I will probably upgrade in the not too distant future anyway, just want to get as much out of this system as possible :p
 
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