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Want to make sure I understand CPU overclocking correctly

Tags:
  • Overclocking
  • Intel i7
  • Rampage
  • CPUs
  • Corsair
  • Asus
Last response: in Overclocking
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March 10, 2014 4:53:11 PM

My rig is...

ASUS Rampage IV Black Edition
Intel i7 4930K
Corsair H110
Corsair 750D
32GB(8GBX4) Gskill 2400mhz
Samsung 840 Pro 512GB
Windows 8.1

Question...

To overclock my CPU I set..

Ai Overclock Tunner = X.M.P.
X.M.P = Profile #1
CPU Core Ratio = Sync All Cores
Core ratio = 45

and save and run prime for 6-24 hours to see if it is stable correct?

When i change the Core ratio the vcore automatically updates for me correct?
I dont have to disable turbo boost do i?

More about : make understand cpu overclocking correctly

a b à CPUs
March 10, 2014 4:57:22 PM

you need to set a manual voltage
download and run cpuz
then run prime 95 and see what the voltage is in prime 95
set core ratio to 45
set cpu vcore to what the voltage is
then run prime 95 and see if you crash
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March 10, 2014 5:04:57 PM

nickbachu said:
you need to set a manual voltage
download and run cpuz
then run prime 95 and see what the voltage is in prime 95
set core ratio to 45
set cpu vcore to what the voltage is
then run prime 95 and see if you crash


I have asus cpuz. So before overclocking I need to run prime 95 and see what the voltage is at then stop prime 95 after 20 minutes and set the cpu vcore that it says and insert core ratio to 45? So there is no way for vcore to synchronize itself depending on how high i set core ratio?
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a b K Overclocking
a c 96 à CPUs
a b Ĉ ASUS
March 10, 2014 5:07:43 PM

Once you reach your desired stable OC, start to back down the voltage till you become unstable and up the voltage by 2 steps and retest for stability. The reason for this is so you run the lowest possible voltage but remain stable. Putting in more voltage then necessary will decrease the life of the chip even more than OCing.

EDIT: Not to mention lower voltage means less heat.

Be sure to also run Intel Burn Test with memory set to maximum for 20 runs. This test combined with the Prime95 test will ensure a stable OC. you can't just rely on one program as I have found one could pass but the other could fail. If both pass your 24/7 stable.
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March 10, 2014 5:16:35 PM

bgunner said:
Once you reach your desired stable OC, start to back down the voltage till you become unstable and up the voltage by 2 steps and retest for stability. The reason for this is so you run the lowest possible voltage but remain stable. Putting in more voltage then necessary will decrease the life of the chip even more than OCing.

EDIT: Not to mention lower voltage means less heat.

Be sure to also run Intel Burn Test with memory set to maximum for 20 runs. This test combined with the Prime95 test will ensure a stable OC. you can't just rely on one program as I have found one could pass but the other could fail. If both pass your 24/7 stable.



Ok just to make sure this is what i am going to do....

1. Set the bios settings to this...
Ai Overclock Tunner = X.M.P.
X.M.P = Profile #1
CPU Core Ratio = Sync All Cores
Core ratio = 45
2. Next run prime 95 and take down voltage with asus cpuz
3. Go back into bios and start decreasing the voltage by 0.05 each time after it is proven stable
4. Run Prime 95 and Intel burn test with memory set to maximum for 20 runs
5. Once it fails go 2 steps back up meaning (0.10 up on vcore)
6. Test 1 more time with intel burn test and prime 95 and should be good to go.

Correct??

So during this time intel turbo boost is on and will be left on even after overclock is completed correct?

Intel burn test and prime 95 test run for 20 runs (on 12 threads) correct?

Last question what is max temp while running test i should allow?
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a b K Overclocking
a c 96 à CPUs
a b Ĉ ASUS
March 10, 2014 5:32:34 PM

after the dropping then upping the voltage, if you are still unstable bump it up by 1 step and retest.

it is best to turn off the boost altogether when overclocking.

intel burn test : set the settings to maximum ram, runs = 20 and threads to auto.
Prime95 just rune the test on blend for 6 - 24 hours.

for temps stay under 80c to be safe.
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a b K Overclocking
a c 96 à CPUs
a b Ĉ ASUS
March 10, 2014 5:40:21 PM

Just to be clear do not run both tests at the same time. Run one after the other.
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