I am not so sure about overclocking a non-extreme edition CPU unless you have the BIOS unlocked on that laptop, I assume its a SAGER/CLEVO based laptop or an Alienware.
I've overclocked my GPUS and I really didn't get very far, but Afterburner, Trixx, Riviatuner, EVGA overclocking software. Pretty much anything works and will sync the overclock to each GPU.
You would be suprised about tripping the breaker in your PSU, I have done it multiple times on my NP7280. 2X 100 Watt GPUS and a 130 Watt CPU can pull some serious power.
Mobo: M5A99FX PRO R2.0 Processor: AMD FX 8320 On water @4.8GHZ
Memory: 4X Crucial 4GB @ 1866MHZ Videocards: 2X Gigabyte Crossfire 380
OS Harddrive:Crucial BX100 500GB SSD Storage Drives: Hitachi POS 2TB & Crucial C300 256GB SSD PSU: EVGA P2 Supernova 1000W
Case: A Really Pimped Out G5 Powermac Case
OCC Cool Club Member