This is the PSU I own: http://www.overclockers.co.uk/acatalog/Akasa_PSU.html
I currently have a 7800GTX, AMD 4000+ CPU on an Asus A8N SLi.
I'm going to order, now, another 7800GTX - and I will be installing water cooling (Danger Den 12v pump)..
Will this PSU cope? If not, i'm going to have to bite the bullet and maybe invest in the Seasonic S12-600, but if it can be avoided I'd like to keep the money in my pocket.