4770k on MSI G45 have I hit my limit?

[Phunky]

So been getting my head around Haswell clocking and struggling to understand all the differences between it and SandyBridge.

I've managed to get it stable at 4.5ghz, now when I say stable that's two passes of Intel Burn Test + gaming. I run IBT to as it usually identifies if i've got enough volts and stop me cashing mid-gaming, although this isn't always the case.

Currently using the following;
- UNCORE 4.3
- VDROP 100%
- VCORE 1.286 (1.304 with above)
- VRIN 2.0
- XMP RAM with force 1.65v as board always seems to run it lower.

This is fine, but if I try to go to 4.6ghz it will boot into Windows but will instantly fail IBT with whea_uncorrectable_error which leads me to believe its VCORE - but i'm not 100% sure due to all the new voltage options we have on Haswell.

I've not gone higher than 1.3 yet and was wondering if there is anything else I should try first or should I just accept that i've hit the limit.

 

[Phunky]

I use IBT as it will find an unstable oc quicker. Takes a min to run two passes and see if stable. While it may take an hour of gaming to find the same problem which is more annoying.

I also think I've hit my limit at 1.3 so will be looking at what volts I can run 43-44 at and take it from there. Anything over 43 needs to run cool

 

[Phunky]

So i've got a bit of strange one now, i've noticed since pushing past 4.3ghz i'll get this really odd cold boot problem where after first boot of the day it will let me into windows and after about 5~10mins it will restart - no BSOD - but on the next boot it the bios complains about overclock settings.

It forces me into the bios, but if I quit straight out and keep settings the same it will then be fine for the rest of the evening. This has happened consistently for a week on various voltages and on everything up to 4.5ghz.

Any ideas? If not i'm thinking its a quirk in the beta bios i'm using.

 

[Phunky]

Cheers, i'll take a look at moving back to none-beta bios tonight when I add 2 more SSDs to my RAID0 array - nothing like more points of failure

 

[Phunky]

People seem to always disregard what Ian says about not bothering with Prime and other synthetic **** but he's right. He might be all about benching but even for 24/7 stuff Prime is total waste of time, I've been clocking CPUs since AMD Thunderbird and NEVER bothered with synthetic stuff

and that's fine, but it's not like i'm priming for 10hrs. It's literally a 30sec run to see if it crashes which prevents it happening mid-game.