More than 1.55v on Q6600?

Skidder

Skidder

Skidder

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Hi, I am trying to squeeze as much as i can from my q6600 and not sure if i should (ok i know i shouldn't but not sure how much i shouldn't) push voltage any more. I can happily use windows and run crysis / ut3 at 4.0 and 3.9 ghz with 1.552v (cpu-z not bios) but it's not prime stable and 3d mark vantage is playing up (waves have gone crazy in the first benchmark, having worked fine before).

Prime runs for a while blend test and large, but small crashes the pc almost instantly.

Temperatures are ok, mid 40s idle (even with improved airflow case temps are quite high due to GTXs and high ambient in top of house in well insulated room). Normal load into high 50s low 60s. prime small fft may be touching 70s (so may be cooling is an issue for prime rather than voltage?)

Should i push more volts through it? Or should i settle for a lower clock and be done with it? I know practically there isn't much difference but i guess the fun is in the trying.

Thanks for any suggestions

Forgot to add have watercooled the CPU (swiftech h20 220) it was very hot before with freezer pro
 
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well you are running at the limit, would say 75c is ok on full load so you might try a touch more vcore but if it is working fine for everything u want it to do then might not want to fiddle (unless u want that primestable for the database table)

tbh i dout you will notice any difference in performance over 3.2ghz on stuff like crysis atleast not anything thats going to change your gamming experience
 
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Thanks. I notice a massive difference from stock to 3ghz in crysis (basically unplayable/jerky at 1920 to 1200 to playable) and still notice a slight difference up to about 3.4 to 3.5ghz and then plateau. I think the three cards demand a lot of work from the processor.

It's more a matter of can i get it to 4ghz stable just as a challenge.

Is the main issue with upping the Vcore the heat or can I damage proc with the addditional voltage even if heat is under control? Thanks
 
well 1.6 is probably your limit assumming that your temps are under control, once you start to run high FSB you could find that you need to start playing with reference voltages and the like to get it stable
 
Im also not sure on voltages lol.

Im pushing 1.68v through mine and it sits at 35c idle and 55c load.

440x9 = 3960mhz, runs nice and fast but cool. Im thinking the chip will die. but its been like this for the best part of 7 months plus now. This is also custom water cooled. Fuzion block and 120.2 Rad plus dual bay res. so plenty of coolant in the system to help with keeping the temps down abit.

Is electro migration a thing to worry about at these voltages??

I know the Q9XXX series being 45nm?? dont live very long with the higher voltage settings.
 
Personally I wouldn't run at the voltages you run at 24/7.

I would be happy going for more voltage just for a benchmark run since it's what windows is showing, not what bios is showing so as long as it's below 1.6v and you have adequate cooling which you have.

IMO if it's not small tft prime stable then your system isn't stable. You might get some games working fine but others may not. In my system, Tiger Woods 2008 always bombs out if I try and overclock too high when Crysis will run fine for hours (I have never figured out why :))

I would also suspect that small tft is falling over on heat. My 3.6Ghz Q6600 never goes above 65 degrees on hours of small tft. At 3.9Ghz it also bombs out when it goes over 70 degrees.

So I am thinking myelf on settling on either 3.6 or even 3.5 for 24/7 running as I have to my cpu another 0.05v+ to get it from 3.5 to 3.6 and it runs nice and cool (and totally silent) at 3.5Ghz.
 
PhillyDee said:
Hmm, I would make sure that the CPU is reading the correct temps. What about the 15Degrees 'bug'.
Click to expand...

Im sure my temps are accurate, and there is no sign of throttling.

Im not too worried lol, have had the chip for quite some time now, its had the 1.68v via bios up its bottom since it was installed lol

It drops to 1.64v under full load btw.

Temps are sport on for the ek fuzion block with the quad nozzle kit installed.

I have seen no signs of any degrade in the oc or stability and love this chip lol. Its a high vid q6600 1.325v i think it was.

I am tempted to buy another to see if i can get a better vid and the real 4ghz mark lol. I have had this chip upto 4050mhz but its very unstable. So the 3960mhz is just nice.
 
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