Intel i5 2500k , help on OC to 4.5?

[omaarrr5]

Hey i would appreciate it if someone could help me out with the voltages or whatever i have to do in order to achieve a 4.5ghz OC.
Im currently at 4.0ghz but thats just by changing the multiplier to 40,
however this morning i was playing around and changed the multiplier to 45 and left everything the same, booted up and started prime 95, stressed for about 4 minutes and it was stable at 58-61 C

just wondering if i had to up the voltages or anything like that
Thanks.

intel i5 2500k
bitfenix shinobi
8gb adata 1600mhz
evga 550ti SC

 

[Sooth1]

Check to see what voltage you're running at under load with the auto setting. If it is 1.35 or lower you are good to go. If it's higher, you will want to try to adjust it lower. Use CPU-Z.

 

[omaarrr5]

at 4.0ghz, im running at 1.248V full load. testing with prime 95

 

[omaarrr5]

1.236-1.248 goes off and on

 

[Sooth1]

those voltages are fine. What are they at 4.5 ghz?

 

[henydiah]

everything chip will different get voltage try in lower voltage first and keep eyes at temperature .. don't exceed untill 70C , that need other feature by disabled / enabled , LLC to high/ultra/extreme ...
you will happy with this : http://www.tomshardware.com/forum/274821-29-sandy-bridge-series-overclocking-cores-guide