I5 2500k Overclock Unstable?

[andrescelano]

Hey, I need your help with this. I overclocked my i5 2500k to 4.4ghz 1.35 volts around 3 weeks ago and ran Prime95 for around 6 hours without any errors. However, the one thing that went wrong was playing Far Cry 4. The game would crash at random times for no reason. It was the game otself since I could just log out and back in and do other stuff. I remember one time that GTA 4 also crashed but that was just random and never happened again. I also have am overclocked HD 7950 to 1050 core and 1350 memory but that is stable since I have no crashes with it. Is this instability or just the game? Even now on rare occasions the game crashes but not as often. What do I do?

 

[13thmonkey]

bump voltage or decrease clock. I had a 3570k stable on prime, unstable on BF3, a +0.005V adjustment solved it.

 

[azca]

run OCCT stress tests, not prime95

 

[bicycle_repair_man]

I'd wager that the overclocked GPU is actually the problem, particularly when you consider that Far Cry 4 is a GPU-intensive game.

I've previously overclocked my GTX 770, and whilst it was stable in MSI Kombustor, it wasn't stable in most of my games.

I can overclock my 2500K to 4.4Ghz at 1.245V. Whilst I understand that every CPU overclocks differently, that's a huge difference, and I don't think increasing the voltage is going to fix your problem.

What happens if you set the GPU back to its default clock speeds and leave the CPU overclock as-is?

 

[andrescelano]

Maybe that is it, I honestly don't know since like I mentioned the crash is completely random. But it manifests itself after around 40 minutes I guess. Could a power supply also be a cause for this?

 

[bicycle_repair_man]

A bad PSU could also be the problem, but I'd expect a full shutdown to occur in that case, not just crashing.

Run Far Cry 4 without the GPU overclock and see what happens. If it still crashes, reinstate the GPU overclock and disable the CPU overclock and see what happens.

Troubleshooting is just a process of elimination.

 

[Scadoosh118]

What temperature are you CPU and GPU reaching?

 

[andrescelano]

A bad PSU could also be the problem, but I'd expect a full shutdown to occur in that case, not just crashing.

Run Far Cry 4 without the GPU overclock and see what happens. If it still crashes, reinstate the GPU overclock and disable the CPU overclock and see what happens.

Troubleshooting is just a process of elimination.

I am trying again but this time with a EVGA SUPERNOVA 750W PSU

 

[andrescelano]

What temperature are you CPU and GPU reaching?

Forget this thread, I am starting over again, follow my progress here if you wish http://www.tomshardware.com/answers/id-2977359/2500k-overclock-bad-chip.html