Ok, I'm not up to snuff on this stuff so I'm seeking help. I'm in the process of putting together a new comp. and I need to know what kind of performance I can expect with this card:Sapphire X1900GT 256MB GDDR3 PCI Express x16 (RoHS). Also will this card work well with my current specs: X2 4400+, A8N32 SLi Deluxe, 2GB Corsair XMS Twinx 2048-3200c2pt, Lite-On dvd dual layer and dvd-rom drives. One more question, will this power supply be enough to push it all: Antec TruePower II-550. I know this is a lot I'm asking but it really important to me and I hope you all can help me out. Thanks in advance.