Hello everyone....
 
I got 3 pretty good questions I wish to have answered...
 
1) Ready boost in MS Vista actually worth its wild? (I was gonna buy a 4gb drive just for that)
 
2) Can a Corsair HX620watt Modular Power Supply handle 2 8800GTS's (G92) in SLI?
 
3) 8-channel HD onboard audio better then my Old Vintage Sound Blaster Audigy Plantinum PCI Card?
 
 
My Specs are as follows
 
-Chieftec Dragon Case
-AMD 6400+ w/Nirvana ZEROtherm 120 HSF
-Gigabyte GA-M57SLI-S4
-4gb 4x1gb XMS2 Corsair 800
-2x Samsung writemaster DVD-RW SATA
-4 80mm Fans
-Nexus Fan Controller w/2 cold cathode lights
-eVGA 8800GTS G92
-Soundblaster Audigy Plantinum
-8in1 card reader
-Corsair HX620watt PS
-Seagate SATA 250gb
-Maxtor SATA 250gb
-USB2.0 5port PCI Card
 
7 external USB devices
 
I just wanted to give all details so no back questions are asked.
 
Thanks Everyone

2.) It can. 8800GTS is PCI-E v1.0 compatible and only has 1 power connector so 150W per card max. That makes 300W theoretical maximum.
You could fit any 1CPU system inside the remaining 300W.
USB offers a max of 0.5A per device so that means a maximum of 2.5W per device or 20W for your devices. Is the 6400+ heavily overclocked?
 
3.) Not in any way. But you may not care about the difference.

1 I'd just get more memory
2 not sure, but I'd think so
3 do you want 8 channels? its free to test.

With RAM so cheap, it would probably be a lot more logical just to buy extra RAM. Flash Drives are still slow anyway.
 
You could easily SLI 2 8800GTS's. You could probably SLI them under a 550-watt too, but it would probably be cutting it close with that power hungry 6400.

I seem to remember that ready boost is only helpful for memory hungry systems.  Your 4 gb should be fine and you do not need to worry about it.

1) I can't see ReadyBoost making any difference whatsoever in that system, 4GB is absolutely ideal right now.
 
2) Pretty comfortably I would imagine.
 
3) I just like the convenience of not needing a sound card. Unless you are an audiophile I don't think you would notice the difference.