CPU O/C advice please

SpherousX
Member

07-20-2018, 07:32 AM

Hi,
I upgraded my mobo and CPU to an i-7 9700k.
I maintain a stable O/C at 5.1ghz with 1.2 voltage and 70C package temperatures.
When attempting 5.2ghz I encounter a blue screen. I've increased the voltage up to 1.215.
Does this indicate I've hit the end of my O/C or should I keep raising the voltage?
This is only the second overclocking attempt, and I'm unsure when to stop.
Thanks

SpherousX

07-20-2018, 07:32 AM #1

Jerryx01
Posting Freak

870

08-05-2018, 06:36 AM

The 9700K vcore operates securely at up to 1.4V.

Jerryx01

08-05-2018, 06:36 AM #2

The 9700K vcore operates securely at up to 1.4V.

eojeoj1
Member

168

08-07-2018, 07:31 AM

What cooler are you using? Be mindful of the temperatures.
5.1Ghz @ 1.2v works well. Personally, I’d likely stop there.
1.4v is considered safe as long as your temperatures stay below 80ºC under full load. Keep in mind, each CPU behaves differently. Running it continuously at 1.4v to squeeze a small speed boost could shorten the lifespan of your new CPU by trying to gain just 100-200Mhz.
Edit: When you refer to 'stable', do you mean an AVX offset at 0 and running Prime95 smallFFT for over 30 minutes?

eojeoj1

08-07-2018, 07:31 AM #3

Cecilix
Member

08-07-2018, 09:15 AM

How proficient do you need to be?
Beyond showing off, the distinction between 5.1 and 5.2 is barely noticeable.
Whether or not AVX matters also plays a role.
Here are some binning statistics from Silicon lottery:
As of 2/6/2019
What percentage can achieve an overclock with a reasonably stable Vcore in the 1.337 to 1.375 range?
And AVX offset = 2.
I7-9700K
5.2 10%
5.1 35%
5.0 78%
4.9 100%

Cecilix

08-07-2018, 09:15 AM #4

ruben5D
Junior Member

08-07-2018, 10:55 AM

I thought speed at that voltage was incredible. Your chip looks great, so I’d just keep it as it is now.

ruben5D

08-07-2018, 10:55 AM #5

I thought speed at that voltage was incredible. Your chip looks great, so I’d just keep it as it is now.

TalhaG_G
Junior Member

08-08-2018, 04:06 PM

I simulated the test with Realbench for 4 hours without errors, but I believe the 8-hour test may have reset my computer. I’ll need to rerun it.
Do you think the 4-hour test is sufficient if it fails at 8?
I’ve been playing games smoothly so far.

TalhaG_G

08-08-2018, 04:06 PM #6

ImKondeX23
Junior Member

08-16-2018, 08:12 AM

If your system crashes or restarts then there's a problem and you should identify the cause and correct it. I personally would be driven crazy if I knew my system had an unresolved problem.

ImKondeX23

08-16-2018, 08:12 AM #7

If your system crashes or restarts then there's a problem and you should identify the cause and correct it. I personally would be driven crazy if I knew my system had an unresolved problem.