Need some voltage advice from the pro's please!!!

S

SwaleSmith

New member
Hi,

Am trying to do some benchmarking with my CPU QX9770 Have got it @ 4350mhz 1.51volts aprox and heres my vantage result....not trying to brag:)

Bench24360.jpg


But heres my questions

a, what is honestly, my max safe 247 volotage (I know 1.5v ain't, or atleast I think it aint LOL, this was just for benching)

b, Whats my maximum I could safely go for benching with out blowing my chip up or have I already met/exceeded it.

Please help!!!!!!
 
Depends on your cooling. I wouldnt go further than 1.5 for 24/7 use personally.

For benching on sub zero just go until temps top out but be willing to lose the chip.

On water or air, as long as your temps are acceptable you *should* only suffer degredation of the chip but I certainly wouldnt go much higher with a chip as valuable as that.
 
Thanks for that so 1.5v is maz for 247 usage on this chip?

am not using no sub zero gear just WC but me temps were not exceeding 63C under load, when ou say migration how quickly can this occur would it take a long time or could you detroy it in a matte of minutes, for example could I do a 3d mark run with 1.6v and not kill my chip or see damage???

regards

swale
 
It will get damaged faster than usual, but more so with 1.6v obviously because you're putting it under much more stress.

I personally don't really like to go too far above the max safe recommended limites for a long period of time, although you're 0.12v above what Intel recommends, I hope that it lasts you a very long time ;)
 
what is the safe limit 1.38v? as to be honest I normaly run a 1.42v @4.1ghz is there even a remote chance that this is likely to cause any problems or atleast not for a good few years, and what kinda problems we talking???
 
name='SwaleSmith' said:
Can someone please clarify is 1.45v a sensible and reasnobly safe voltage for my cpu for 24/7???
Click to expand...

Under decent watercooling it should be fine... plus you have a warranty anyway.

I have my 65nm quad on 1.53 24/7 and it stays well cool.
 
Have good WC system I could probably cool more temp as a result of extra volts from the cpu but am scared I may knacker my chip.

It seems to be hard to get a straight ''sensible'' answer as to what kind of voltage I'm able to go upto before I am really risking my chip, due to voltage migration (or is this more common for sustained extreme voltages?)
 
The problem there is no straight answer.

All chips aren't made equal.

Thing is as soon as you start pumping more voltage than Intel recommend through a CPU, you are probably shaving time off it's total life. That said, the CPU's life could end up being 10 years and you're just knocking a couple off. That isn't going to bother you as by then that chip would be long gone.

You just have to do what your happy with or search what other people have done and how long with it. As long as you don't go crazy and the temps are at a decent level, you should be ok.

Plus like I said, if it did die (which it shouldn't if you don't go over the top), you have your warranty.

name='SwaleSmith' said:
Have good WC system I could probably cool more temp as a result of extra volts from the cpu but am scared I may knacker my chip.

It seems to be hard to get a straight ''sensible'' answer as to what kind of voltage I'm able to go upto before I am really risking my chip, due to voltage migration (or is this more common for sustained extreme voltages?)
Click to expand...
 
Aww crap, I forgot QX9770 was 45nm.... For 24/7 I'd stick around where you are at now.. 1.41 ish. Is Vdroop an issue?
 
Hi there, I have a watercooled setup on the striker 2 extreme with the QX9770 and i'm currently running 4.5GHZ Rock solid stable @ 1.55V but I believe it's actually about 1.5V and it seems fine, playing Crysis without incident! :o)
 
jesus thats a good overclock my chip would never get to that on 1.5v im sure maybe 4250 or so infact I 've never heard f that spped baing stable on those chips short of using N20. nice overclock wanna swap chips :-)
 
Well I managed to get my system to boot @ 4.95GHZ!!! but it blue screened during windows loading screen :o) I reckon that i if pumped 1.6v it might stabilise it but i don't want to fry my chip!

that is at 1800Mhz FSB BTW, however I was playing around with the RAM timings and managed to get a 2GHZ FSB @ 4.5 GHZ but windows wont boot and i'm convinced it's my RAM timings so I will play with those later on when i get time!

Very happy with my CPU though, seems to overclock very well!
 
Know you're going down the i7 route now but 1.5v actual is about as far as you want to go with these for 24/7. Running my QX @1.41v@4.05 24/7 as there's not much real world benefit running these higher in relation to the increase in vcore. Good for benching, good for frying....sod all use for anything else..!;) There's also not much point comparing results in vantage unless you are running 177.xx drivers on the gpu's and disable PPU.....still, nice score though...:)
 
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