i5 3570k Stable Overclock 4.5GHz, but small problem with iGPU

jlw_4049

Honorable
Dec 1, 2013
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10,640
My build is as follows:
i5 3570k @ 4.5Ghz
Asus P8Z77-v LX
8 GB ram
HD 7950
(Latest BIOS update as well)

So, I use my 7950 on my monitor and other monitors at my desk. Which works flawlessly. However, the problem comes in when I use the HDMI on the motherboard (which is powered by the i5 3570k iGPU) on my television. I get artifacts and weird stuff on the screen, just like a burned out graphics card. But this only happens when my i5 3570k is overclocked. Which again, is completely stable, I have tested it with prime for over 24 hours, tons of intelburn tests run, played countless hours of games on it. When the processor is at stock clocks, I have no issue with the video. Runs smooth, no artifacts, or anything abnormal.

Considering all of this, I have manually tried to add offset volts to the iGPU when the processor is overclocked and can't get rid of it. It honestly usually only makes it worse. So, I'm kind of stumped and would love some help on the matter.

Thanks!
 
Are you using the windows native driver for the intel graphics or have you manually installed the latest chipset and graphics drivers for the iGPU and motherboard? Updated drivers for the PCIe GPU?

BIOS up to date?

Have you changed any BIOS settings for the overclock other than the CPU multiplier and voltage?
 

jlw_4049

Honorable
Dec 1, 2013
76
0
10,640
So, I did manage to completely work it out btw guys. This was my first time overclocking a processor that also had an iGPU built in. Turned out I needed way more voltage and the next step up on lineload to the processor to supply the iGPU and the processor with an overclock at 4.5, and decided to drop back from that to a 4.3, at a vcore with offset at 1.192 maxed out and lowered lineload back down to 2.

All my graphical problems on the chip are perfect. As I have ran intel burn test maximum and furmark at the same time on the iGPU and it's been completely stable for an hour with no artifacts. I am going to prime blend test for the next 12-24 hours to insure perfect stability. I guess the settings I was using before, was only good enough to power the CPU by itself without actually having enough voltage to send to the iGPU, since I used my 7950 during all the testing I did to it, I never seen the glitches until after I had done all of the overclocking test.

So my OC was stable, for just the CPU, but when it needed to share voltage with the iGPU it didn't have enough.
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