@ perfect light;
Zomaar ff een google quote:
To give an idea of the performance using a GTX260 with and without an 8800GT for PhysX, here are the numbers clocked and unclocked.
(these have been posted before)
They demonstrate that at least for Batman running at 1080p a stock clocked 8800GT is enough.
Cryostasis is much tougher to get high enough framerates but I have nothing to report as I havent tested it.
I agree with kumquatsrus recommendations.
Quote:
Results for E8400 @ 4.1GHz, GTX260 clocked/unclocked, 8800GT clocked/unclocked for PhysX.
These are to test the effect of adding an 8800GT and what clocking each card gives when paired together.
all tests are at 1080p res
All game settings to highest, vsync off, PhysX set to highest.
(both cards are mild overclock versions so slightly higher default clocks)
GTX260 clocked (720/1475, 1208), no PhysX card, PhysX set to highest.
AA Min, Max, Average
0xAA 34, 76, 56
2xAA 30, 69, 51
4xAA 29, 68, 50
8xAA 29, 63, 47
8QAA 24, 60, 38
16xAA 27, 64, 47
16QAA ran very very slow in places and crashed at the end.
GTX260 stock (626/1350, 1053), 8800GT stock (625, 1566, 900)
AA Min, Max, Average
0xAA 41, 108, 73
4xAA 41, 92, 67
8xAA 38, 93, 64
8QAA 32, 82, 54
16xAA 36, 90, 63
16QAA 30, 75, 50
GTX260 clocked (720/1475, 1208), 8800GT stock (625, 1566, 900)
AA Min, Max, Average
0xAA 46, 109, 81
16xAA 41, 96, 70
16QAA 35, 87, 58
GTX260 clocked (720/1475, 1208), 8800GT clocked a bit (723, 1753, 916)
AA Min, Max, Average
0xAA 46, 111, 81
16xAA 43, 100, 71
16QAA 36, 86, 58
At 0xAA, the 8800GT jumps framerate from 34 min to 46 min, 35% extra.
At 16xAA, the 8800GT jumps framerate from 27 min to 41 min, 52% extra.
The GTX260 doesnt have enough memory to run 16QAA and highest PhysX without the 8800GT.
Clocking the main gfx card gives a good performance boost.
There is no value in clocking the 8800GT (PhysX).
Clearly you cant test PhysX on highest without an extra PhysX card so these results wont apply directly.
It does demonstrate that for this game running at 1080p, an unclocked 8800GT is enough.