currently I have an Athlon 64 X2 4400+ 939 and an XFX 7800GTX 256MB card. I just bought a new monitor that runs at 1680x1050 Resolution and the 7800 is ok at that res, but I can start to see it having trouble in the near future. Should I get this used one on ebay and go SLI:
http://cgi.ebay.com/XFX-GeForce-7800-GTX-PCI-Express-256MB-nVIDIA-SLi-Ready_W0QQitemZ320220493213QQihZ011QQcategoryZ40161QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
or, should I wait till this summer and get an 8800GT, or GTS 512. Another concern is how closely do I have to match the 7800's, I know that at one point you had to have the exact same cards for SLI down to the very detail, and I am not sure if the 7800's were before or after SLI became more flexible. Another curiosity, is whether the X2 4400 will bottleneck or not in any of these scenarios, I am not looking to upgrade the whole system just yet, and I don't feel it would be worth it to hunt down the fastest S939 Dual Core chip for the amount of speed increase it would yield.
http://cgi.ebay.com/XFX-GeForce-7800-GTX-PCI-Express-256MB-nVIDIA-SLi-Ready_W0QQitemZ320220493213QQihZ011QQcategoryZ40161QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
or, should I wait till this summer and get an 8800GT, or GTS 512. Another concern is how closely do I have to match the 7800's, I know that at one point you had to have the exact same cards for SLI down to the very detail, and I am not sure if the 7800's were before or after SLI became more flexible. Another curiosity, is whether the X2 4400 will bottleneck or not in any of these scenarios, I am not looking to upgrade the whole system just yet, and I don't feel it would be worth it to hunt down the fastest S939 Dual Core chip for the amount of speed increase it would yield.