i7 920 overclocking

[the wopster]

what is the max temp and max voltage i can put through my 920 im @4.2 1.375v and i load at 72c p95&IBT. but i have seen people push all the way to 90 when benching anyone got any ideas

 

[ejr22]

Max temp is 0.01 degree before it melts!

I think the CPU will start to throttle once it touches 100 degrees. Obviously you don't want to go anywhere near this if you value the lifespan of your chip so I would personally say anything up to about 80 is a reasonably safe max. But as with everything in computers - the cooler the better!

 

[reygjabla]

what is the max temp and max voltage i can put through my 920 im @4.2 1.375v and i load at 72c p95&IBT. but i have seen people push all the way to 90 when benching anyone got any ideas

Can you post some CPZ and Core Temp/Real Temp scrennie? Your voltage seems too high.

 

[JonJ678]

1.375V is the right ballpark for 4.2. 72 degrees is lower than I'd expect on air and a bit higher than I'd expect on water, so I guess the OP is using the ek supreme with a 240 radiator or has put his graphics cards in the same loop.

It depends primarily on how brave you are at this point. Over 70 suggests that to get it significantly quicker you're going to need better cooling. Is the stated 1.375V with load line calibration on or off? Similarly is this with turbo on or off?

 

[capriboy1978]

With Jon above on temps, I hit 83 at 4.3 with turbo using a corsair H50, at 4 (200 x 20) it hits low 70's. I've dropped back to 3.8 at 1.2v.

Volts are high for a D0 but not for a C0, considering the voltage that temp seems Ok to me.

 

[the wopster]

sorry for the delayed reply my rad is a 360 but its one of the older Aquacomputer Evo 360 rads. im always unlucky when it comes the these things i have just had to put my volts up to 1.408 because it failed p95 after 3 hours i must have a bad chip lol

 

[capriboy1978]

C0 or D0?

That voltage increase is going to hurt your temps for sure.

 

[the wopster]

d0

 

[reygjabla]

I have just had to put my volts up to 1.408 because it failed p95 after 3 hours i must have a bad chip lol

That's way too much for a DO. I'm running 4.2 @ 1.275. You can play between 1.275 to 1.325.

 

[the wopster]

bad chip?

 

[reygjabla]

Not exactly. If you can post your settings then maybe the guru's here can find out whats holding you back.

 

[the wopster]

multi 21
bclk 196
ddr3 1571
uclk 3143
qpi 7074 mt/s
cpu v 1.375
cpu pll 1.9
qpi/dram1.35
ioh1.3
ioh pcie 1.5
ich 1.2
ich pcie 1.5
dram 1.64
llc enabled
cpu differential 700mv
cpu clock skew delay 300ps
these are my settings

 

[the wopster]

by the way this is my chip info SLBEJ 3939B303

 

[reygjabla]

multi 21
bclk 196
ddr3 1571 > Auto
uclk 3143 > Auto
qpi 7074 mt/s > Auto
cpu v 1.325 > 1.325
cpu pll 1.9 > 1.88
qpi/dram1.35 > 1.325
ioh1.3
ioh pcie 1.5 > Auto
ich 1.2 > Auto
ich pcie 1.5 > Auto
dram 1.64
llc enabled
cpu differential 700mv > 800
cpu clock skew delay 300ps > Auto
these are my settings

Try the settings highlighted above and post here the results. By the way, have you updated the mobo's bios?

 

[the wopster]

yep i have the latest bios

 

[reygjabla]

Then definitely your CPU voltage is simply too high.

Here's mine @ 1.275v. My temps went as high as 88C but i'm using Noctua so that's just fine.

 

[JonJ678]

That doesn't look like you've overclocked slowly, only increasing voltages when required to maintain stability and putting them back down when not.

Specifically, increasing IOH, ich, PLL are unlikely to have increased stability at any point and may well have decreased it. Likewise that you're on such high vcore suggests that vcore is not the issue, so forcing more through it will just make matters worse. More voltage is not the cure to all ills.

Instead of copying other peoples settings / taking a guess and starting around 190 bsck, start from 133 with the voltages as low as possible and then increase in jumps of about 5 bsck, smaller if needed. Only increasing voltages a notch at a time if it helps, putting it back down if it didn't. Only going up to the next speed with the current one is stable. Otherwise you end up trying to get it stable with no idea what to try, if you were stable a few hz ago then it'll only be one or at most two settings to change.

Otherwise your results are never going to be as good as people who do it carefully.

Despite the above which you really should follow, I think your issue is with turbo enabled. Turning it off and overclocking at x20 may give you more predictable results, my system makes very little sense with it enabled.

 

[the wopster]

Try the settings highlighted above and post here the results. By the way, have you updated the mobo's bios?

with those settings i crash within 15 seconds of occt

 

[the wopster]

That doesn't look like you've overclocked slowly, only increasing voltages when required to maintain stability and putting them back down when not.

Specifically, increasing IOH, ich, PLL are unlikely to have increased stability at any point and may well have decreased it. Likewise that you're on such high vcore suggests that vcore is not the issue, so forcing more through it will just make matters worse. More voltage is not the cure to all ills.

Instead of copying other peoples settings / taking a guess and starting around 190 bsck, start from 133 with the voltages as low as possible and then increase in jumps of about 5 bsck, smaller if needed. Only going up to the next speed with the current one is stable. Otherwise you end up trying to get it stable with no idea what to try, if you were stable a few hz ago then it'll only be one or at most two settings to change.

Otherwise your results are never going to be as good as people who do it carefully.

i have started slow i went from 3.2 ,3.6,3.8 to 4ghz my settings up to 3.8 were stock then for 4 ghz was
vcore 1.2975
pll 1.88
qpi1.3
ioh1.2
ich1.2

 

[the wopster]

btw my temps for 4ghz are 60,58,60,57