Trying to OC my i4770k but computer freezes @ 4,2 GHz

[Mark Johansen]

Hi there

I just bought a new computer with the following setup:

i4770k
Gigabyte GA-Z87X-UD3H
Asus GeForce GTX770 OC (DirectCUII cooling)
Samsung 840 EVO
Noctua NH-D14
Kingston HyperX DDR3-2133 (XMP Series)
SeaSonic 750W 80+ Silver Certified

I'm new at this thing but I've watched Tom Logan's video on overglocking and tried to follow it through:



I've changed the following settings in BIOS:

VCore Loadline Calibration from Auto > Extreme
Vcore from Auto > 1.200 (I've also tried 1.250)
I've enabled Intel Turbo Boost Techology
I've disabled CPU Enhanced Halt, C3/C6 State Support, CPU Thermal Monitor and CPU EIST Function
I've tried both XMP profiles (9-9-9-24 / 11-12-11-30)


I've used OCCT and Prime95 for testing.

Before OC'ing anything my temps reach a maximum of 80 C with Lin checked off in OCCT and around 65 in Prime.

When OC'ing I've only been able på reach 4,1 GHz stable (4,1 GHz Clock Ratio and CPU frequency @ all cores). If I OC further my computer will start to freeze around 10-30 seconds after starting the test in OCCT (with Lin checked off). This is the same whether I use XMP profile 1 or 2 and whether I change the VCore from 1.2 to 1.25 (I was able to run 4,0 GHz @ 1.1 Vcore).

Am I doing something wrong or did I just lose the silicon lottery?

Regards Mark

 

[Mark Johansen]

Wrong forum. Sorry about that.

 

[tinytomlogan]

Follow the guide - leave your memory at 1600 while working on the CPU clock side of things.....

Do too much at once and you wont know what its failing on.....

 

[Mark Johansen]

Follow the guide - leave your memory at 1600 while working on the CPU clock side of things.....

Do too much at once and you wont know what its failing on.....

Thanks for your quick reply Tom!
XMP profile 2 is running at 1600 MHz. Should i disable XMP?

 

[Remmy]

Yes, don't bother with XMP, just set it manually.