Overclocking

[obxdude018]

Ok, I'm trying to get my overclock up more than what it is, it may not be designed to go any further, but we will see, ok I have core voltage set at 1.44 volts and the cpu oc'ed to 3.8ghz, last night I tried to bump it up to 4.2ghz and the computer restarted, but didn't load bios or nothing, it just stayed with a blank black screen. Is this a matter of not enough voltage or just can't push it further.

Specs
Gigabyte MA790X Mobo
AMD Phenom 2 940 B.E.
G Skill 8Gb Ram
Radeon 4850 Crossfire
Corsair H70 Cooling
850W PSU
32GB SSD
640GB HDD

 

[95BlackGA]

I've got 4.3 (20x multi + 215 FSB) out of 1.55v, and currently at 4.0 (20x multi) with 1.45v, with my unlocked Phenom II X2 555 on a Gigabyte GA-MA78LM-S2. Can you post a picture of CPU-Z or get a validated link? What revision/stepping is the processor? Did you just change your multiplier? (15 to 19?)

 

[obxdude018]

CPU-Z Validator 3.1