Help identifying the problem with my overclock

bremdog

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Jun 15, 2015
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Hey everybody.

Im relatively new to overclocking and this is doing my head in!

My specs are:

G3258
Hyper X fury 1866 8GB
Gigabyte Z97p-D3
EVGA SSC 960
EVGA 500w 80+
1tb WD Blue
Hyper 212 Evo

I have been fiddling about with overclocks and have got it relatively stable at 4.4 or so i thought...

I run prime95 and after 4-5 minutes on blend test i get an ''uncorrectable hardware error'' BSOD.

I have checked the list of errors and what needs to be adjusted but I cant find QTI/PTT settings on my mobo.

It also says to check the Vcore so im not sure which one to mess with as this is the only error I have encountered.

I have the Vcore at 1.305v and multiplier at x44.

The only other thing I have changed is the Uncore to 4.3.

Is there anything else I should take into consideration such as Load Line calibration etc?

Everything is running cool under load at stock and also when i was running Prime my temps were not at any level to be problematic at all.

They were averaging 37 and maxing at 50.

Im pulling my hair out!!!

Thanks in advance :)
 
Solution
I'd have a read here

http://www.overclockersclub.com/guides/intel_pentium_g3258_oc_guide/

I'm not familiar with the 3258 specifically but pushing vcore to 1.4v is a bad idea. It's considered the top limit of anything considered 'safe' in haswell overclocking, closer to 1.3 or under would be better for long term/full time use. Make sure all your c states are disabled in the bios (sleep states/reduced power states). Before messing with a ton of other settings like llc and offsets which are more for fine tuning or pushing extreme overclocks, I'd try to get a basic overclock under control which is where it looks like you're having issues.

If you're running xmp on your ram, try disabling it for now. It will make your ram run a bit slower...
Have you increased Vcore? You need to increase the juice in order to overclock. I'm an AMD man so unsurfe of what CPU settings you need to disable in BIOS, but anything like Cool and Quiet or Turbo should be disabled.

Once this is done increase the Vcore by the smallest increment you can in BIOS eg. .025v, boot in and run Prime again, it should last longer before it errors, KEEP YOUR EYES ON THE TEMPS, as you increase volts your temps are gonna go up. If it errors in Prime again, go back in and increase the vcore again a tiny bit until its stable. If your temps are OK, you can increase the multiplier again and repeat the process until you find your max stable speed. Good luck!
 
Yeah i have the Vcore at 1.3 it is 1.1 as standard.

I have Intel Turbo disabled as well I forgot to mention that!

So basically have the multiplier at 44 and increase the vcore from stock settings by 0.25?
 


.025 not.25, dont take it above 1.48v or so.
 
I'd have a read here

http://www.overclockersclub.com/guides/intel_pentium_g3258_oc_guide/

I'm not familiar with the 3258 specifically but pushing vcore to 1.4v is a bad idea. It's considered the top limit of anything considered 'safe' in haswell overclocking, closer to 1.3 or under would be better for long term/full time use. Make sure all your c states are disabled in the bios (sleep states/reduced power states). Before messing with a ton of other settings like llc and offsets which are more for fine tuning or pushing extreme overclocks, I'd try to get a basic overclock under control which is where it looks like you're having issues.

If you're running xmp on your ram, try disabling it for now. It will make your ram run a bit slower at 1333 but for the moment it may not be playing nice. Also I'd try reducing your uncore, having the uncore too high can cause instability in some haswell cpus. Try lowering it to around 3.9 or 4. If these things don't help, try reducing your multiplier instead of pushing your vcore higher and see if you can find a stable baseline to start off with, one that won't bsod under stress testing.

Once you get stable, then try enabling xmp again and retest. You could also have gotten a chip that just isn't a great overclocker, in my opinion that much vcore for a 44 multiplier is pretty high. If you get anywhere near 1.48v you're way too high on the vcore. Some extreme overclockers or those who are doing short term competitions may wish to push the limits but that's a different story. Racing slicks are great for the race track but a crappy idea for daily highway driving.
 
Solution
Thanks a lot mate.

I dont have an option for xmp but my ram is 1866 i have set it to run at 1600.

I have 1.35v now and its running stable with not one BSOD in stress tests.

35-37 average temp idle and 64.2 average with 70 max in prime small fft.

That all sounds good do you not think?

 
I did some checking to see what others were getting for their g3258 and results vary. One person managed 4.5ghz at just under 1.2v though appears they were lucky and got a good chip. Another can't get theirs over 4.4 pushing up to 1.295v, but was able to hold 4.4ghz at 1.225v. Someone who was having a bit worse luck was getting 4.3 at 1.32v and 4.4 at 1.38v.

If you care to read through some other folks settings and results, the link is here.
http://hardforum.com/showthread.php?t=1826057

I still think 4.4 at 1.35 is a bit on the high side for vcore but not completely out of the ordinary. The issue with overclocking is the silicon lottery, nothing is a guarantee and some chips will require higher voltages than others and/or not reach the same speeds as others. If it's just an ok overclocker and not a great one it might be a bit limited and no amount of tweaking settings will change it.

It's better sometimes to look at other individuals results than professional overclocking reviews. Not always but sometimes if a company knows their product is being reviewed they 'cherry pick' a sample to send for review. It's not the reviewers fault, they test it like they normally would and report back. The issue is their sample may not accurately represent one a regular customer is likely to get by chance and was instead pre selected knowing it was going to give great results.