Hi all
I have the following system
ASUS Maximus V Formula running latest bios 1408
i7 3770K
2x8Gb G.SKILL Ripjaws X Series DDR3 1600 F3-1600C9D-16GXM
GIGABYTE GV-N670OC-2GD GeForce GTX 670 2GB
Seasonic X-850 850W ATX12V 80Plus Gold certified
Samsung 830 SSD 256Gb
Western Digital Caviar Black 2Tb
Onboard audio
CPU cooling with Antec Kuhler 920
Case cooling with 4x120mm fans (NZXT Switch 810 case)
Running Windows 7 64-bit, fully updated as of approx 2 weeks ago
Latest chipset drivers from the ASUS website
Idle CPU temp (package temp) 25-30 degrees, load stabilises around 45 degrees. Individual core temps stabilise on load between 57 and 62 degrees
The only "overclock" setting I have is to set the XMP memory profile, which sets the turbo boost on but sets the cores to auto
I haven't fiddled with any other voltage/clock settings
Only other settings I have changed are disabling unused onboard devices, and changed some fan profiles
Everything is hunky dory, with the multiplier varying between 16x and 39x based on CPU load leading to speeds of 1600MHz to 3900MHz. Bios reports target speed as 3900MHz.
However consistently after waking up from standby, the peak multiplier becomes 37x even on full load using Prime95. So I get a range of speeds from 1600MHz to 3700MHz.
I have tried changing Internal PLL Overvoltage from auto to disabled, as I read this might cause sleep problems, but no help.
I have tried with and without turboboost enabled (Asus AI Suite II) but the same happens.
Even with Asus AI Suite II completely uninstalled the same behaviour occurs.
I will continue to try to change other settings but was hoping that people could guide me with this.
Thanks for your help!