I7 870 Oc master hyper 212

Bump up the BCLK. It should be set at 133 right now. You may have to downclock the RAM manually a bit at some point to keep it stable since turning up the BCLK increases that speed also. Keep upping the BCLK until the CPU becomes unstable on Prime 95 or Intel Burn tests. You can use the highest stable setting for your overclock, or start increasing the vcore a bit to go higher

I'd advise turning off Turbo Boost before overclocking

hm, ok so lets say i want to overclock to 3.80Ghz or even 4.00ghz what should i set the ram to?

I have never OC'd an 800 series CPU so this is based upon my experience with the 900 series i7's.

Stock:
133 BCLK x 22 CPU multiplier = 2.93 GHz
133 BCLK x 8 mem multiplier = 1066 MHz

25% OC:
167 BCLK x 22 CPU multiplier = 3.67 GHz
167 BCLK x 8 mem multiplier = 1333 MHz

At this point you are limited by your RAM if you want to maintain your memory multiplier. If you had DDR3-1600

30% OC:
173 BCLK x 22 CPU multiplier = 3.81 GHz
173 BCLK x 8 mem multiplier = 1384 MHz

37% OC:
182 BCLK x 22 CPU multiplier = 4.00 GHz
182 BCLK x 8 mem multiplier = 1456 MHz

You could check and see if your MoBo offers a mem multilier of 6 or better yet upgrade to DDR3-1600

check this:

http://www.bjorn3d.com/read.php?cID=1673&pageID=7550
http://www.guru3d.com/article/core-i5-750-core-i7-860-8...

it does and thanks, got it overclocked =D