Issues encountered during initial overclocking of 4790K
Issues encountered during initial overclocking of 4790K
Hello everyone. I recently moved from a 4th gen i5 to an i7 4790K. I use an MSI Z87-G41 motherboard. I've attempted overclocking without much success. I have an AIO watercooling system that maintains my CPU around 28 degrees Celsius at stock idle, about 38 degrees when running normal tasks like game and Chrome, and 50 during intensive tasks such as Cinebench R15. That's the situation I'm in. I thought there would be plenty of room for overclocking. I set the clock to 4.8Ghz at around 1.3 volts, but the PC won't turn on. I tried raising the voltage a bit higher, but it still doesn't power up. I set it to auto and it boots, though Windows gives me error messages right away when I try to start. Eventually, I managed only a modest jump from 4.6Ghz to 4.5 at auto voltage, which does allow Windows to boot. Anyone have any suggestions on what might be going wrong?
By "not turning on", is it attempting to? Typically, you'll see lights/fan activity for a brief second.
If there's just no life to it at all..... that's...... strange.
For what it's worth, the "auto" voltage aspect (depending on the chip/vendor etc) can be quite high on Devil's Canyon CPUs. Actually pushing 1.27V or so through a 4790K isn't unheard of via "auto"... and that's stock speeds.
Pure speculation on my part here:
You may well be dealing with a BIOS limitation (where it sees "stock" 4.4Ghz @ 1.27V as 'normal'), stopping you pushing less voltage @ higher clocks, and stopping itself going >1.3V for higher clocks..... which is definitely going to be what an "auto" functionality pushes through the chip.
Are you on the latest BIOS revision? I'd start there. Take a look around for some sort of "over-voltage" protection option. Hopefully you can raise a cutoff (say from 1.3 to 1.35V until you land what you want to use). Not 100% sure if that level of tweaking is available though, it's usually "enabled" or "disabled".
Definitely start with a BIOS update if available. You'd need v1.6 for the 4790K to even work on that board, so you're on at least that version. 1.7 and 1.8 exist though, so there's a possibility you're on any outdated BIOS revision..... although 1.8 did come out in July/14
Barty1884 :
By "not turning on", is it attempting to? Typically, you'll see lights/fan activity for a brief second.
If there's just no life to it at all..... that's...... strange.
Hey, thanks for the reply!
I understand that I have been a bit vague about the "not turning on". With saying it doesn't turn on I mean the light and fans go on for a few seconds and then shuts down before anything appears on screen.
I updated to the latest version (1.8) before seating the CPU. I currently am able to run 4.6 by setting all voltage modes to override instead of adaptive, keeping the VCCIN at auto and Vcore at 1.25 manually.
Weirdly, 4.6 at 1.3 just doesn't work, like my CPU/motherboard isn't fond of higher voltages.
Been trying 4.7 at 1.25 and 1.35 and everything inbetween but it won't work. At lower voltages it does seem to have an easier time booting, as 1.27 gets me into windows but shuts down shortly after logging in. Anything higher just gives me BSOD after the windows loading icon.