Questions about Overclocking and Temperatures.

Lawk Duski

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Dec 19, 2014
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Hello, im new to overclocking and i want to learn something about it, so i will start with some questions, but first let me reveal my specs, i have:

Core i5 4690k (Non-overclocked)
Asus Z97-E
Cooler Master Seidon 120V (ver.2)
Asus Radeon HD 7850 DCU2 (Ver.2)
Corsair CX600
1x500GB, 1x1TB WD BLUE HDD
120GB Samsung Evo 850 SSD
1x120mm CM Jetlflo blue LED Fan

in addition, i live in middle east, kurdistan to be more specific, which is hot, so my room temperature while the AC is off are pretty high (32c) , even with the liquid cooler on, my CPU temperature is between 36-40c while running 2 browsers. (chrome & Maxthon)
but when the AC is on. the room temperature is 20c, and cpu temp while idle is 23-27c, maximum 30.
while gaming, or under load, and AC off, the cpu temperature reaches 60c stable. and doesnt go up more. even with the prime95 maximum heat test. it doesnt go above 60c.
so here are the question i got, although i wont be overclocking soon because of my PSU (According to this website my psu is tier 3 and is not recommended for overclocking)

- Where do i change the CPU voltage/frequency? is there a specific program or do i do it in BIOS?
- which do i change first? voltage or frequency? i already know that i have to increase frequency by 0.1 (100mhz) and voltage by 0.001 each time till i get a stable Frequency
- how do i know i have a stable frequency? how do i know when to stop?
-what are the risks?
- how much will it increase my idle and full load temperature?
Sorry for the long post, Thanks.
 
Solution
Use the bios.

change your CPU multiplier to 42 and change the CPU voltage to 1.2v - stress test this for 1hr using Prime 95 v 26.6

IF STABLE....

up the multiplier to 43 - repeat stress test

do this over and over til you have a stable overclock.

You can increase voltage but considering your ambient temps i would keep a close eye on it and i wouldn't recommend anything over 1.3v

That should be a starting point

you cant really break your CPU as it will throttle itself down if it gets too hot - i wouldnt ever run my CPU over 80 degrees even though it can technically run safe ~105 degrees before throttle down. Heat will kill damage your CPU if it runs @ 100 degrees alot. just keep an eye on temps during stress test.

Jonathan Cave

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Oct 17, 2013
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Use the bios.

change your CPU multiplier to 42 and change the CPU voltage to 1.2v - stress test this for 1hr using Prime 95 v 26.6

IF STABLE....

up the multiplier to 43 - repeat stress test

do this over and over til you have a stable overclock.

You can increase voltage but considering your ambient temps i would keep a close eye on it and i wouldn't recommend anything over 1.3v

That should be a starting point

you cant really break your CPU as it will throttle itself down if it gets too hot - i wouldnt ever run my CPU over 80 degrees even though it can technically run safe ~105 degrees before throttle down. Heat will kill damage your CPU if it runs @ 100 degrees alot. just keep an eye on temps during stress test.
 
Solution
The simplest approach is to simply increase the max multiplier gradually.
Let all else stay on auto.
Stress test with OCCT; it will shut down the test at 85c.
Prime 95 is nasty, and you can't uninstall it easily.
OCCT is more representative of what you will be doing.
The thing to monitor is the vcore. 1.25 is about as far as you want to go. No more than 1.30.
Your luck in the chip lottery will determine what multiplier you can get at 1.25v.
You will find that most any cooler will keep your chip below 85c if you do not exceed the max recommended vcore.
Only if you are seeking records and are not concerned about chip damage or longevity should you goo higher, even if the cooler is keeping the temperatures down.
 

Lawk Duski

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Dec 19, 2014
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4,690


is it safe to overclock using CX600?