Which one would be more worth it? With an AMD 6400+, 4GB RAM would a 8800 GTS or 8800 GT be better for gaming at 1680x1080 (or 1440x900). I mean, obviously the GTS model is better then the GT, but is the extra $40 or so buck worth it? I heard that the GTS was better for higher resolutions, but I don't know. I've looked everywhere for GTS vs. GT comparisons but to no avail. Any help would be appreciated. Thanks!

For 1680x1050 i say go for 8800GTS one (Although a 8800GT is good for that res but the GTS will do better in higher resolutions)

MSI 8800GT Quad Pipe $190 AR -
http://www.newegg.com/Product/Prod [...] 6814127329
 
MSI 8800GTS OC $220 AR (with the Witcher) -
http://www.newegg.com/Product/Prod [...] 6814127325
 
PNY 8800GT $160 AR shipped free - (edit: nevermind, price went up)
http://www.amazon.com/XFX-PVT88PYD [...] B000XQHBEE
 
 
Of these choices, two have nice dual slot cooling.  The GTS is $30 more, but comes with the Witcher game. IMO The GTS is worth $30 more and the game is a bonus.  The PNY is cheap and if you don't mind noise it will save you more money. (edit: nevermind, price went up)

Also, reference clocked GF8 card comparison here:
http://www.legionhardware.com/docu [...] id=710&p=2
 
Here you can see how the overclocked 8800GT models compare to a stock 8800GTS (G92).  The MSI is a different card, but clocked the same as the Quad pipe.
http://firingsquad.com/hardware/nv [...] page11.asp
 
Here you can see how the OC'ed 8800GTS (G92) compares to a stock GTS(G92) and Stock 8800GT, and one OC'ed 8800GT(Leadtek).
http://www.firingsquad.com/hardwar [...] /page4.asp
 
 
 
Anyway, look over the three reviews and you should get a good understanding of how stock and factory overclocked 8800GT and GTS (G92) stack up with each other.  

price + performance +  resolution + cooling solution (or not) + bundle (what's included) = your choice