San Pedro :
You don't need a 900 watt PSU, I'd bet the 700watt OCZ should be enough. Especially if it is the Gamexstream model.
I was looking at either the
OCZ ModXStream Power 780W
http://www.pccanada.com/viewitem.asp?id=6970
or
OCZ ModXStream Power 900W
http://www.pccanada.com/viewitem.asp?id=6971
I going with the modstream for the modular cabling, its one of the things i hate about my current system is that the power supply has a butt load of cables and even with twist ties theres just too many cables. its the biggest thing that has bugged me about me current system over the years. And i dont think ill got with the GTX i remember seeing how big it was in my brothers system, and he had to move his hard drive to get it to fit, and still just barely fit, so not sure if GTX will even fit in my system. I might be mistaken but i think the 8800GTS is a bit shorter.
and keep in mind for my planned system i am going to have:
2 8800GTS OC in sli(i think)
Zalman CNPS9700
Q9550(if it ever comes out grrrr)
EVGA 780i motherboard.
OCZ 4Gb PC2-6400 DDR2 Dual Channel Reaper CL4 HPC Edition
150GB raptor SATA
74GB Raptor SATA
400GB Seagate SATA
40GB Maxtor IDE(Only use this drive to install windows then get drivers and everything installed and image over to raptor,rest of time its disconnected)
16x Dual layer plextor drive IDE
16x LG litescribe dual layer drive IDE
Audigy 2 platinum
1 floppy drive
also have 5 case fans and a hard drive cooler with 3 little fans in the bottom bay for my raptor.
So i dont know if i should go for the 900watt to be on the safe side or do you think 780 is good enough.
And i hope this will be a decent build for a gaming/video editing machine.