Ok so after almost 3 years running this i7 920 based system @ stock speeds I think its about time this system got an OC boost
Case: Cooler Master HAF 932
PSU: Corsair Professional Series HX850 (850 Watts) Modular Power Supply
Mobo: Gigabyte GA-EX58-UD5
BIOS Version: F13
CPU: Core i7 920 D0
CPU Cooler: CM Hyper 212+ with 1 Corsair SP 120 (HP) as intake & 1 Corsair AF 120 (HP) as exhaust
Memory: 12 gigs of Corsair Vengeance LP DDR 3 Memory, 1600MHz CL9
GPU: EVGA Geforce 680 SC
HDD's: 4x 1TB WD Caviar Blacks
OS: Windows 7 Pro x64
Now before even starting the overclock I noticed that in the bios even though I set the clocks, settings and voltages to their stock settings
However I'm still getting clock ratio of 21 for a speed of 2798.95 mhz.
Assuming that's Intel turbo boost, is there any reason why the CPU would be at turbo boost speeds while in the bios settings with little load on the CPU?
Also when running prime 95 with In place large FFT's is it normal to have one core with a temperature difference of 3C from the other three cores?
Also I'm finding it very difficult to push this cpu to even 3ghz via the Base Clock without the board failing to post or windows failing to boot. Even bumping the VCore to 1.375v, the QPI to 1.3v and the RAM to 1.65v, the overclock is real flaky at best. So what I'm I missing here? I'm kinda new to this sort of thing but would a beefier PSU, Better Air (or maybe water) cooling help, Maybe a clean install of windows, Did I change the wrong settings in the bios, not enough settings changed, or is this i7 920 on its last legs and should just be left alone at stock settings (hoping thats not the case).
Any help or suggestions would be great.