Asus Max. IV Extreme Z-68 and EVGA GTX-580

[Cigarjohn]

Looking for any tips and advice for overclocking my two EVGA GTX-580 liquid cooled video cards. If anyone has these cards or the GTX-580's and have good stable overclocks for them, please contact me.

Same with overclocking my i7-2600k cpu on my Maximus IV Extreme Z-68. Thanks.

Viewsonic VP2655wb
Lian Li PCX2000F Case
Asus Maximus IV Extreme Z-68
Intel i7-2600k
Mushkin DDR3 16gig 7,8,7, 24, 2T
Antec HCP-1200 Pro
(3) 256 gig Crucial M100 SSD's.
Asus Xonar Xense sound card
(2) EVGA GTX-580's
Logitech G510, G13, G502
Creative 7.1 Surround

Koolance ERM-3K3U external liquid cooler.