CPU Voltage effect on performence question
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CPUs
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Punkbuster
June 7, 2013 9:24:09 AM
So recently i overclocked my 8350 to 4.8 using 1.625 volts. When playing planetside 2 i would get FPS in high 20s to low 30s with CPU being the bottleneck. (PS2 is really processor heavy). Anyway Prime95 didn't throw any errors so I thought the clock was stable with such a low voltage. However when playing PS2 i crashed a couple of times in a matter of a few hours. So i upped the processor voltage to 1.475 and played without crashing for two hours. So obviously my lower voltage clock wasn't as stable asi thought. Here is the kicker though, after I uped my voltage to 1.475 (but kep freq at 4.8) i got a steady ~40 FPS. An almost consistent 10 FPS increase. I'm not too pro with processors so my question is why would voltage effect FPS? Is it because with a lower voltage my processor was generally unstable but not to the point of crashing, just causing hiccups or what?
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Punkbuster
June 7, 2013 9:58:44 AM
griptwister said:
I haven't OC'd my CPU yet, but I've heard that if you OC to a good point, that proper Voltage could mean the difference between a non-stressed and a stressed CPU. It's Important especially because if the voltage is too high, it'll either stress your cooling or your CPU performance.Well thats a given, if you over volt your CPU and throw improper cooling into the mix you are in trouble. Even with good cooling you shouldn't go higher that 1.5volts (ive been told) for day to day use. That wasn't the question though...
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Your voltage effects how much power your CPU can use to run at the frequency it's clocked at. It's like running a car on 87 octane when it requires premium fuel...will it run? Yes, but poorly.
AMD CPUs can be finicky about voltage...once you get them dialed in though, they typically run like a freight train for a good long while if you're stable.
The thing to do now, would be to back off your voltage a tad until you start to notice a performance decrease or loss of stability. You could also turn up the multiplier in 1/2 increments a tad as well to see if you can push your OC any further on the voltage you're at.
Worse case scenario, you know it's good where it is and you can dial it back to where it is now if you can't lower the voltage or increase the multiplier any. You may be able to hit 5.0 GHz on that CPU if you can keep it cool and stable.
AMD CPUs can be finicky about voltage...once you get them dialed in though, they typically run like a freight train for a good long while if you're stable.
The thing to do now, would be to back off your voltage a tad until you start to notice a performance decrease or loss of stability. You could also turn up the multiplier in 1/2 increments a tad as well to see if you can push your OC any further on the voltage you're at.
Worse case scenario, you know it's good where it is and you can dial it back to where it is now if you can't lower the voltage or increase the multiplier any. You may be able to hit 5.0 GHz on that CPU if you can keep it cool and stable.
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Punkbuster
June 7, 2013 10:49:44 AM
8350rocks said:
Your voltage effects how much power your CPU can use to run at the frequency it's clocked at. It's like running a car on 87 octane when it requires premium fuel...will it run? Yes, but poorly.AMD CPUs can be finicky about voltage...once you get them dialed in though, they typically run like a freight train for a good long while if you're stable.
The thing to do now, would be to back off your voltage a tad until you start to notice a performance decrease or loss of stability. You could also turn up the multiplier in 1/2 increments a tad as well to see if you can push your OC any further on the voltage you're at.
Worse case scenario, you know it's good where it is and you can dial it back to where it is now if you can't lower the voltage or increase the multiplier any. You may be able to hit 5.0 GHz on that CPU if you can keep it cool and stable.
Thats good to know. Also yeah I was planning on hitting the big 5 0 with this cpu. I think i rolled the dice and got lucky with this chip, from what I understand the average voltage for a stable 5.0 is around 1.52-1.54 and I think ill be able to pull it off with less than 1.5. I just hope my h100i is enough
Thanks again dude!
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