OC GA-Z68XP-UD3

[NitrousX]

Hi guys im trying to OC to 4.5ghz my PC but I keeps BSOD when i get to the welcome screen.
Currently OC at 4.0ghz but when i try 4.5 it screams then I have to lower the multiplier.

Here's my specs:
Motherboard: GA-Z68XP-UD3 bios version F8
CPU: I5 2500k
Memory: Kingston Hyper X 4GB Dual Channel
HDD:Spinpoint f3 1TB
GPU:GTX 570 Gainward
PSU:Corsair GS 600w

[Dark Mantis]

Hi and welcome.

Why not try it at a slightly lower multiplier. Maybe it will be ok. It seems that quite a lot won't reach 4.5 without some tweaking the voltage etc.

[NitrousX]

true i have tried 4.0ghz and its happy at that multiplier, just want to see if i can reach 4.5ghz by tweaking the voltages im not a expert but
im willing to risk it. Plus i have a decent cooler notua dh14 to push it

[Dark Mantis]

You certainly shouldn't have any problem with the temperatures as the cooler is excellent and the CPUs are not hot runners at all compared to the previous chips.

As for the overclocking I would suggest reading up on it and make use of a few threads on the forum here before actually making adjustments.

http://forum.giga-byte.co.uk/index.php/board,49.0.html

[NitrousX]

Thanks for the reply yes i have looked at the guides, all of them are for static oc with mine what I would like to do is have it being energy efficient. Sorry i should of mentioned it earlier.

 Before consulting the guide i saw some settings that others had put up on another forum with a similar mobo to mine.
They enabled all the energy efficiency settings but disabled turbo. Then in the voltage settings they put up the load line to level 4 then vcore to 1.35 then change the QPI/VTT to 1.1v. On my mobo i changed it to their setting apart from the load-line i changed it to level 5. As I could not get it to boot up windows when load line is set to level 4.
Then yesterday i tried to run prime 95 in blend mode for 8 hrs it only lasted 2hrs then it BSOD, prior to that i also had a BSOD whilst watching youtube clips to obviously the OC is unstable.  Here's the custom settings i used:





In your guide for OC on stage 2 instead of disabling all the energy efficient settings ive left them running. And enabled the PPL overvoltage then changed the load line to level 2, but i can't even manage to get to the boot screen either that or BSOD.
I'm pretty much stumped atm as most settings in the guide i can't run in windows it just crashes or their unstable im clueless now =(

[Neil79]

http://forums.overclockers.co.uk/showthread.php?t=18338090

This should help you out!

[Rolo42]

What speed is your memory?  If you're using XMP, be sure to put Performance Enhance setting to [Standard].

I got a UD3H I built for someone at 4.2-4.5 with turbo and a minimal voltage increase.  I was on a time crunch so I couldn't find an ideal configuration.

I have two UD4s at 4.2 with minimal changes: the aforementioned one, disabled turbo and real-time changes in OS, and put all my DRAM voltages to [Normal] (I don't want it increasing it).  Everything else is [Auto], including the energy efficient stuff.

The highest I got was 4.5 but that was putting everything pretty high with no energy efficiency (i.e. running at set freq/voltage even at idle); the 7% gain wasn't worth it to me.  I did a rough stress test to ensure it was reliable (IBT, prime95 overnight; IBT +  prime95 +  Metro2033 timedemo at max settings for several hours).