Having problems with my i7 920 and 5850 OCing

413x

413x

413x

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im a bit stuck at 3.3GHZ for my i7, i tried to [and want to] get it to 3.8GHz and be able to run at this constantly,

i managed to boot at 3.8GHz but soon as i ran prime it threw a paddy, i am wondering if its my Vcore [set at 1.2] but im a tad apprehensive as to how far i can take this, i dont want to ruin a 200£ chip!

this is my first build/OC


im also having issues with my 5850 ive only managed to get it to maximum ATI overdrive settings. after this seems to give me more problems than its worth.

Is a GC overclock really going to be worth the effort? ie will i be able to get better frame rates/visual qulaity if i do?

im not interested in benchmarks, just real life performance.
 
Your board isn't really an overclocker's board, but you should be able to get slightly higher clocks than 3.3 GHz if you up the voltage (1.24ish), what cooling do you have?

EDIT tomshardware got 3.9GHz using 1.45V with a 216 clock and 20x multiplier so if you have a decent cooler, try upping the voltage and see what happens
 
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is the mother board ive got really the bottle neck?

theres no way im pushing this cpu past 1.3v id rather have the longevity than risk that!

i have 2x 200mm coolermaster fans pulling IN
and 1x 120mm and 1x 200mm fans pulling out
a noctua NH-U12P with one noctua fan pushing air across the CPU cooler [i have a spare fan for this too]

im only getting 60C before the CPU computer locks up and screen goes black



on the 5850 my car is fine on the ATI overdrive settings maxed out [775/1125] but im not having much luck going higher
but i wont bother if theres not much difference in fps.
[to go beyond overdrive i am using MSI afterburner and AMD GPU tool]

anyone with a 5850, is it worth the effort to persist taking it higher?
with the CPU it obviously is as i encode a lot of DVDs Blurays
 
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shroomz said:
That's the thing about overclocking, your mileage may vary.
Click to expand...

I know, and perhaps I didn't put it very eloquently. But you'd have to be pretty unlucky to get a chip that needed those volts just to reach 3.9, and I'd be suspecting other things like a ridiculous vdroop.
 
hi,

just for your referance purpose on voltage I have the i7 920 as well set at 4 gig 21x191 and using 1.344 volts ( might have got it lower but temps were less than 70 degrees on full load prime testing and it was happy so left it

prime95 stable for 24 hours now been full load constant 24/7 for over a month :)

hope that helps
Ian
 
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I had a P6T se and you should be able to get to 3.8 no problem.

Keep an eye on temps, then try this.

Blk 200
Multi 19
Vcore 1.28, but you might need less, some CPUs seem to need a big jump between 3.6 (stock normally) and 3.8/4
everything else 2 notches above minimum
Dram set to 1.66V (i think this is the nearest to 1.65)
Drop your RAM down a notch to 1444 ish.

Put your graphics at stock.

You can turn C1E etc off, but shouldn't really matter at this O/C.
 
IanBoyle said:
hi,

just for your referance purpose on voltage I have the i7 920 as well set at 4 gig 21x191 and using 1.344 volts ( might have got it lower but temps were less than 70 degrees on full load prime testing and it was happy so left it

prime95 stable for 24 hours now been full load constant 24/7 for over a month :)

hope that helps
Ian
Click to expand...

ok i seem to have gotton to 3.8GHz stable at 1.25V with temps below 70C at full load[dont want much higher than this, tho my most demanding program handbrake doesnt push temps higher than 60] does seem to be a voltage being too low issue, the Vs dont look stupidly high either

how do you get so low temps with that many volts? what cpu cooler are you using? or is it water?
 
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Sayso said:
I had a P6T se and you should be able to get to 3.8 no problem.

Keep an eye on temps, then try this.

Blk 200
Multi 19
Vcore 1.28, but you might need less, some CPUs seem to need a big jump between 3.6 (stock normally) and 3.8/4
everything else 2 notches above minimum
Dram set to 1.66V (i think this is the nearest to 1.65)
Drop your RAM down a notch to 1444 ish.

Put your graphics at stock.

You can turn C1E etc off, but shouldn't really matter at this O/C.
Click to expand...

my ram is rated at 1.6V so dont want to overvolt it as im aware ram is very sensitive and 1.6 came on the pack

id also like to keep the multi at 21 if possible, the ram isnt at full 1600 its set slightly lower

thanks for the help btw so far :)
 
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i have my memory at 1.6 also ( stock )
the memory ends up at just over 1500 rather than the full 1600 but is very stable and fast

to test temps games dont do it some use your video card a lot and hardly use the cpu anywhere near max

run prime95 on full for a while that will show if your stable and if your overheating with the use of a program like core-temp or such

Ian
 
IanBoyle said:
i have my memory at 1.6 also ( stock )
the memory ends up at just over 1500 rather than the full 1600 but is very stable and fast

to test temps games dont do it some use your video card a lot and hardly use the cpu anywhere near max

run prime95 on full for a while that will show if your stable and if your overheating with the use of a program like core-temp or such

Ian
Click to expand...

if you were refering to handbrake, thats a video encoder, maybe i mistook your game point

i ran prime for over an hour on 1.25 with speed fan and got the 70C figure with 1.25V and no loxk ups


on the point of asus prefering even multipliers.. what source does that come from?

also any help/advice on the video card front?

EDT, also..is it worth putting the second fan on my noctua heatsink?
 
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hi,

yes two fans are better than one remember were still to get to summer yet better to get temps low as possible now than have the thing unusable during a heatwave :)

i have two fans on my cooler and there dead quiet ( noiseless in fact )

Ian
 
Hmmm, can't find a source. In fact most places seem to say the opposite. Read it somewhere on here though. Meh, all you can do is try and see, it's not like it'll blow up if I'm wrong ;)
 
so what settings are you using now...let us know and we can advise you how to proceed.

the thing with the RAM with X58 is that the speed isnt the greatest factor (unless you are not using the potential at all), you are better running it under the max and lowering the timings !!

It sounds like you will be able to get 4Ghz, but be warned some cpus have a big jump in temp at this point which is not surprising as this is a 50% SPEED increase.

If you have a good 920, 4.2 under 1.3V is not out of the question (my first chip was happy at 1.28) but then your mobo will be a limiting factor at these higher clocks, the chipset and mosfets get a lil bit hot!!
 
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