Here's a good review of graphs of 8800GTS-320 vs 8800GT etc.
http://www.hardwarecanucks.com...sc-edition-review.html
Sure it may not be the 8800GTS that matches your overclock, but if you look
there are few or no cases where an extra 20% overclock would radically
improve the playability of a GTS320. Mostly it's either FINE or HORRIBLE with little
in-between, same for the 8800GT for that matter.
Lost Planet Extreme Condition 1600x1200 Max AA/AF/quality:
8800GTS-320 = FAIL.
World In Conflict 1600x1200 Max. custom settings, 4xAA, 16xAF:
8800GTS-320 = FAIL.
World In Conflict 1280x1024 Max. custom settings, 4xAA, 16xAF:
8800GTS-320 = FAIL.
PT Boats: Knights of the Sea Demos (various settings)
8800GTS-320 = FAIL.
Company Of Heroes DX10 1600x1200 Max Details 4xAA
8800GTS-320 = Playable but bogs down a fair bit.
Company Of Heroes DX10 1280x1024 Max Details 4xAA
8800GTS-320 = Playable but bogs down a little.
Conclusion: Turn off the AA and/or AF and maybe drop from 1600x1200 (or more)
down to 1280x1024 for Crysis and you probably don't need to step up to
8800GT or better, most everything will be very enjoyable.
Even on my 8800GTX I sometimes turn off AA or AF and that fixes any
problem with performance I may have well enough to keep me happy.