Core i7/X58 Overclocking Thread

[freshy]

lol damn. you want to really test stability try running linpack.

link for linpack ? please

You're 20 hourse Prime stable??? Whats your settings?

ive been more than 20 hours prime stable blend and small ftt and my pc still crashed when running 2 smp cllients with ht on, priming now with f4r bios 16 hours still going
191 x 19 + turbo on, HT on
uncore x16
mem x 8
qpi link x36
vcore 1.38v
qpi/vtt 1.35v or1.375v not sure i forgot , half asleep when i started it
vdimm 1.66v

still need to try drop voltages a bit more

[003]

link for linpack ? please

http://www.xtremesystems.org/forums/...d.php?t=197835

[Hot'n'Chilly]

ive been more than 20 hours prime stable blend and small ftt and my pc still crashed when running 2 smp cllients with ht on, priming now with f4r bios 16 hours still going
191 x 19 + turbo on, HT on
uncore x16
mem x 8
qpi link x36
vcore 1.38v
qpi/vtt 1.35v or1.375v not sure i forgot , half asleep when i started it
vdimm 1.66v

still need to try drop voltages a bit more

Looks like you have a really nice OC going there. How far do you intend to drop those voltages, do you think your current ones would risk you eventually burning out your CPU early? I've seen people all over the map with voltages... its come to the point where I'm not even sure what considered OK anymore except Intel's offical quotes (1.65v).

[safan80]

link for linpack ? please

you can use LinX which is a gui for linpack

http://www.xtremesystems.org/forums/...highlight=linx

Core i7 owners, to fully stress your CPUs you'll need to run 2 instances of LinX at the same time.

[Xello]

ive been more than 20 hours prime stable blend and small ftt

Do you mean 10 hr small fft + 10 hour blend, or 20 hour small fft + 20 hour blend? You shouldn't waste your time with small fft, it's for testing max heat output - good for testing your cooling. It puts less stress on the cpu than large fft, which is why Blend is the best option

I always use 24hr blend as the pass mark for my final OC's - has never failed me.

[freshy]

Looks like you have a really nice OC going there. How far do you intend to drop those voltages, do you think your current ones would risk you eventually burning out your CPU early? I've seen people all over the map with voltages... its come to the point where I'm not even sure what considered OK anymore except Intel's offical quotes (1.65v).

i would love to be able to drop my vcore back to at least 1.375v as i had it stable with that vcore when i was on f4k bios, then i flashed to f4n and i needed more vcore and more qpi/vtt to get stable, im now using 1.35v qpi/vtt as before with f4k i only needed 1.315v,but even if i go back to f4k now i still need more volts, but no use crying over spilt milk , i will prolly push my vcore to 1.45v and qpi/vtt to just under 1.45v to get stable with ht on and turbo for 4.1ghz and stop there and just make sure im not killing my chip by going any higher before going for 4.2 ghz again

you can use LinX which is a gui for linpack

http://www.xtremesystems.org/forums/...highlight=linx

thanks for link guys

Do you mean 10 hr small fft + 10 hour blend, or 20 hour small fft + 20 hour blend? You shouldn't waste your time with small fft, it's for testing max heat output - good for testing your cooling. It puts less stress on the cpu than large fft, which is why Blend is the best option

I always use 24hr blend as the pass mark for my final OC's - has never failed me.

man ive had this rig for 2 weeks and all ive done is prime, prime, prime, ive done so many runs its not funny, and yea 20 hours of small ftt and 20 hours of blend runs, when i first started with blend runs ppl said no do small ftt, then ppl said do blend , lol ppl need to make up there minds , anyway im gonna start hitting it with linpack now

and if ya's think that you are stable try running 2 smp clients for 24 hours with that affinity changer with HT on and turbo on , and see how stable ya's are , good luck

and merry christmas guys all the best to you and your family's in the new year

edit... if i called 2 to 3 hours of prime stable then i could say that i got 4.3ghz stable, but to me even 13 hours of prime isnt stable as ive gotten errors even after 19 hours of prime, small ftt and blend

[Xello]

edit... if i called 2 to 3 hours of prime stable then i could say that i got 4.3ghz stable, but to me even 13 hours of prime isnt stable as ive gotten errors even after 19 hours of prime, small ftt and blend

Then that's your experience and your opinion and you're entitled to it

I'll stick with mine based on my experience, until it fails me

About prime, Blend really is the option to go for, small FFT loads data of a size that fits in the cache on the cpu and not so much your ram, which is why it traditionally produced hotter cpu (penryn and previous), this was mistaken by alot of people as being more stressfull but it's not, it's just a hotter cpu because the l1/l2 cache is being used more. Large FFT will utilize the memory and therefore memory controller, so for i7 this stresses the cpu more because the memory controller is located on the Uncore with the L3 cache. That's why large FFT is making cpu's hotter compared to small FFT, relative to how it used to be with penryn.

Blend just covers all the bases, good luck with Linpack though. I might run intel burn test once i have my final OC down, out of curiosity. I done this on my QX9650 and it failed where i was 30hr+ blend stable. I ignored it and never once had a crash/BSOD after. Up to each person themselves i guess.

[freshy]

maybe i should just drop my voltages down then so that im just game stable to then and not bother folding with this rig

but i really dont want to push qpi/vtt v more than 1.45v till we know what is safe for 24/7 use, i might just put it on 4.1ghz prime stable* for now, and wait till we know more

[ReverendMaynard]

maybe i should just drop my voltages down then so that im just game stable to then and not bother folding with this rig

but i really dont want to push qpi/vtt v more than 1.45v till we know what is safe for 24/7 use, i might just put it on 4.1ghz prime stable* for now, and wait till we know more

The great thing about the i7 is that less is more. Settle for a lower clock for folding and it'll still pump out better than average ppd.