Chief,
The Viper 550 is a nice little 3D card, mine's worked very well for me so far. However it is getting a little old as far as video cards go.
The lastest batch of the 3dfx and nVidia cards are the way to go if you have the cash (they run about 250.00 and up). If cash is a little tight, I suggest the 770 vice the 550, first it has 32 meg of vid memory while the 550 has only 16, and you should be able to find one fairly cheaply now.
Just REMEMBER buy ONLY the 770Ultra there are some cheapo knock offs out there that are really junk and will perform worse than what you already have. Stick with the Ultra and you should have no problems.
Sharky
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Playboy Leader
307th FS/31st FG
You can run but ya just die tired