Unable to reach i7-4790K at speeds exceeding 4.6 GHz using Corsair H115i
Unable to reach i7-4790K at speeds exceeding 4.6 GHz using Corsair H115i
Hello everybody,
I'm currently OCing my i7-4790K but haven't been able to reach 4.7 GHz. I'm using a Corsair H115i liquid cooler.
I run Prime95 blend test for stability checks and have set the cooler to performance mode (fan and pump) through Corsair Link.
The configurations I've tried so far are:
- 4.7 GHz @ 1.30 V – PC restarted after a few seconds
- 4.7 GHz @ 1.32 V – BSOD after a few minutes
- 4.7 GHz @ 1.35 V – no crash, but temperatures exceeded 90 °C after a while
- 4.7 GHz @ 1.33 V – also high temperatures (90 °C)
- 4.6 GHz @ 1.25 V – PC restarted after a few minutes, max core temp was 74 °C, seems stable
Is this typical with liquid cooling? Or is there an issue with the chip? Any advice on what to do next? Thanks.
EDIT: Even at 4.6 GHz @ 1.28 V, temperatures are now 87 °C. What's going on?
It seems you didn't win the lottery, assuming you have good heat sink paste and a solid connection between the heat sink pump and the CPU. You didn't mention your motherboard—I use an Asus Z80 Gryphon and it's running stable at 4.7 with a voltage of 1.299V. At that setting, I'd test 1.20V and adjust in steps of 0.05V, stopping before anything above 1.3.