4770k on MSI G45 have I hit my limit?

Phunky

Phunky

Phunky

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Saltaire, West Yorkshire
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.
 
Stop using ibt for a start, use your system for your normal tasks. Ibt/p95 runs are a waste of time and generate unneccesaary heat. Ie, my 4770k will hit 94c in p95 in seconds, as a gamer i dont find p95 very interesting, hence i dont run it anymore. 4.5ghz on a 4770k is a good overclock mate, be happy with it. Temp wise in normal use such as games, theese chips run grand temp wise. 67c max here in a case that has no air intake so will be going in the bin soon.
 
Phunky - unfortunately more mhz means more voltage. There's not much you can do to get 4.6ghz stable unless you raise the volts. I'd expect 4.6ghz to need over 1.35vcore on that chip, maybe even closer to 1.4v.

For the extra 100mhz you might gain i'd leave it as is for 24/7. You've got a decent O/C there and 4.6ghz won't make much of a difference in game! :)
 
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
 
IBT and Prime kills / degrades your overvolted chip though gaming will not!!!

With Haswell 1.35v is really your top option on water. But not for those stress tests!!

Maybe you can run 44 or 45 at 1.3v this is fine for 24/7
 
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 I had something strangely similar on my mobo a while back.

Randomly on some boots it would not let me past the BIOS unless I loaded optimised defaults. I then had to go back reapply all my overclock settings and it would work fine for a few days then happen again.

I loaded the up to date BIOS and fingers crossed, I haven't had any issues in about 6 weeks.
 
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 :D
 
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. You might as well be aiming to build the worlds most powerful calculator.
 
MjFrosty said:
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
Click to expand...

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.
 
But the issue is seriously Prime is not your games. Your CPU could do two days on prime or whatever and then when you need the PCI X controller which is on chip it BSOD. I have seen it.

Cold boot is often removed by using offset or adaptive voltages for clocking. Try this way if Cold boot is a pain ass.
 
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