Overclocking question

esoteric · 4 Jun 2013 at 19:01

I recently OC'd my i7 930 2.8GHz to 3.4GHz, which is water cooled by a Corsair H40 pump. I was hitting 85c in games and didn't like the overall temps inside the case.

So I've dropped down to 3GHz where my mobo would turbo boost my CPU at. But to get to 3GHz I went a different route.

Turbo clock spec was 134.9 x 22, to go back to 3Ghz I have done 200x15

What I wonder is if there is a difference in performance between the 2 methods to get to 3Ghz, or any difference at all?

wazza300 · 4 Jun 2013 at 19:05

their shouldn't be,

can't remember now if its better to use a higher cpu multi or not

it shouldn't be hitting 85c at 3.4ghz either,what kind of cpu volts were you using?

esoteric · 4 Jun 2013 at 19:10

wazza300 said:
their shouldn't be,

can't remember now if its better to use a higher cpu multi or not

it shouldn't be hitting 85c at 3.4ghz either,what kind of cpu volts were you using?

Was the higher end of 1.3v, not sure precisely. I forgot to change it and left the Voltage on Auto :eek:

my temps right now are 48c average at 3GHz and it was around 65 with the overclock on. I've got the voltage locked now at 1.12v for 3GHz.

wazza300 · 4 Jun 2013 at 19:13

what board are you running and what speed memory?

and yeah auto volts=high temps

use dvid if you have a gigabyte board or cpu offset for asus,i can try and help you get a decent cpu voltage

setter · 4 Jun 2013 at 19:14

Regarding multipliers, on my 920 @ 4ghz. 21x193 used less voltage than 20x200, the latter also allowed my ram to run at it's rated speed of 1600mhz, which in turn gave a higher uncore clock speed.

esoteric · 4 Jun 2013 at 19:28

My mobo is a Gigabyte. GA-X58A-UD3R. My RAM is 6Gb Corsair XMS3 Classic, 3 sticks.

wazza300 · 4 Jun 2013 at 20:26

well you could try dvid,first set cpu voltage to normal in cpu voltage list

then see how much cpu v is being used in system info and enter maybe a - minus dvid to take off voltage maybe try -0.05v

to work it out use a calculator and enter stock cpu voltage when set to normal say 1.2v and your stable with 1.12v so 1.2v-1.12v= 0.08v so enter -0.08v into dvid and so on

esoteric · 5 Jun 2013 at 00:17

wazza300 said:
well you could try dvid,first set cpu voltage to normal in cpu voltage list

then see how much cpu v is being used in system info and enter maybe a - minus dvid to take off voltage maybe try -0.05v

to work it out use a calculator and enter stock cpu voltage when set to normal say 1.2v and your stable with 1.12v so 1.2v-1.12v= 0.08v so enter -0.08v into dvid and so on

Never heard of DVID and can't find anything useful from Google.

wazza300 · 5 Jun 2013 at 00:26

Dvid is dynamic voltage control,it allows CPU to downclock in speed/volts at idle and switch to full speed/voltage at load

It should use less than 1v at idle and full CPU voltage which is set by Intel plus whatever amount you add in dvid to make up your stable oc voltage

If you use a fixed voltage it won't downclock in volts,hence using dvid

freddie64 · 9 Jun 2013 at 12:31

OLDPHART said:
HI again, the only other Bios setting l use is the Dynamic Vcore[DVID] If you have this setting follow my guide -

Easy Way To Work Out Your Dynamic Vcore[DVID] -

My Settings For Example -

This setting in the Bios Dynamic Vcore[DVID] which lowers your CPU Vcore even further [but not your multi]. So my Bios stock setting for my CPU Vcore is 1.25625v at 2.67GHz and my CPU Vcore is 1.31875v when my CPU is overclocked at 4.2GHz. Take away the Stock Vcore from the Vcore used to Overclock the CPU at 4.2GHz > 1.31875v.

1.31875v - 1.25625v = 0.06250v is your Dynamic Vcore[DVID] setting in the Bios > set your CPU Vcore to NORMAL > them Dynamic Vcore[DVID] to 0.06250v and thats it. Right if you have CPU-Z up you should see what your CPU Vcore has been lowered to mine 1.008v, run something like SPI-1m and your Vcore should go up being under load.

CPU Vcore > Bios - 1.31875 > CPU-Z - 1.296v > with DVID it has lowered it to 1.008v.

Hope this helps.

I used this guide to work out my DVID.