I have trouble with OC i5-4670k stability on ASRock Z87 Extreme4 mobo.
My recent settings:
DRAM Voltage: 1,5V
DRAM Frequency: 1333MHz
CPU Clock (All core): x46
VCore Voltage: 1,3V
I didn't touch any other settings, Cache frequency/voltage left on auto too for now (seems to be running x38 at 1,3V). Trying to figure out maximum Clock multiplier.
4.7Ghz was unstable at 1,35V and I didn't feel confident with my temps occasionally jumping over 85 degrees.
So I thought I could settle on 4.6. On 1,29V it crashed in Intel Extreme Tuning Utility Stress Test quite quickly. Raised it to 1,3V - 13 hours stability test passed. I was so happy to finally see this result.
Decided to test gaming performance. Played Borderlands 2 for 1-2 hours, then PC crashed at loading screen. Checked Windows Error log - Kernel-Power critical error.
Tried Battfield 4 - crashed (with a really weird sound that kept going until I hit Reset button) after about 10 minutes, again Kernel-Power error.
Then I raised VCore Voltage to 1,31. BF4 crashed after a little longer this time (coincidence?), 20-30 minutes, maybe more, I'm not sure exactly. 3rd Kernel-Power error.
On the other hand Dota 2 worked fine, I guess it wasn't stressful enough for the CPU.
Could anyone please suggest what should I do? Is there any point in increasing VCore Voltage further?
I hope I didn't damage my chip, as I had tons of crashes/BSODs over the last few days. I've always paid close attention to temperatures which almost never gone above 80 degrees.
Anyway, last night I tried to work with 4,5GHz / 1,25V
Played bf for about 30-40 minutes, didn't crash. But I experienced 2 really bad frame rate drops, each of them for a few second, like 3-5s - 20FPS or less, extremely choppy (never happened before). I checked temps after that game - GPU (asus gtx 780 dc2oc) reached 68 degrees, I've never seen anything above 63, usually 60 max in BF4. CPU temps were normal. Is it possible that it's somehow connected with CPU? I didn't even try to OC my GPU yet... I'm worried that I messed something up. I've also noticed that programs that used to load pretty much instantly sometimes launch with 5s+ delay, I click on icon, nothing happens for 5-10s and then it starts (for example HWMonitor, Origin platform).
Sorry for such a long post, thanks in advance for taking time to go through this. I really don't know what to do. I'll be grateful for your help!