What you're asking if an nVidia GeForce 7600 GT can run FSO with all the graphical goodness?

Want to hear a story? Better want to, 'cause I'll tell it anyway. I've got an nVidia GeForce 6600 256 MB. I did a little bit of testing with nVidia profile settings...
I use adveffects vp file, too. Anyway. I put everything into the game; command line was as follows:
C:\Pelit\Freespace2_SCP\fs2_open_369_rc4.exe -mod fsport,mediavp368zeta -spec -glow -env -jpgtga -mipmap -nomotiondebris -2d_poof -noscalevid -missile_lighting -img2dds -no_vsync -cache_bitmaps -dualscanlines -targetinfo -orbradar -rearm_timer -ballistic_gauge -ship_choice_3d -3dwarp -warp_flash -snd_preload -alpha_env -fps -ambient_factor 20
And on "Video" tab I set as follows (OpenGL mode, of course)
Resolution 1280x1024x32bit
Texture filter trilinear
Anisotropic filter 16x
On my nVidia Control Panel I set up a profile for the fs2_open exe:
Anti-aliasing - 8xS
Anisotropic filtering - Application-controlled
Image settings - High Quality
Vertical sync - Application-controlled
Force mipmaps - Trilinear (not sure if this should be set to Application-controlled - is the "Texture Filter" option in Launcher exactly the same thing?
Conformant texture clamp - On
Extension limit - Off
Hardware acceleration - Single-display mode
Trilinear optimization - Off (and could not be set to On; it was grayed)
Anisotrophic mip filter optimization - Off
Anisotrophic sample optimization - Off
Triple buffering - On
Negative LOD Bias - Allow
On these exact settings, RC4 build gave me about 50 fps when facing empty space, about 30-40 fps when there were fighter(s) or bomber(s) in view, and when facing any HTL capital ship, the fps dropped somewhere around 20-25; on very near and on explosions it went sometimes as low as 10-20 fps.
However, even this low it was completely playable (no seconds-long stops at shockwaves as it used to give at earlier builds)), and quite eye candy. Reducing AA setting to lower value gives much more enjoyable frame rates - 2x AA gave 120 fps when facing empty space, about 50-60 fps in normal dogfight and about 40 when facing a Fenris/Leviathan (don't remember which it was). On shocwaves it sometimes drops to ~20, but rarely below. And it STILL looks quite eye candy with 2x AA setting.
I think that's quite well optimized, considering the looks of the game - and considering the already gaming-wise mediocre system:
GeForce 6600 (without any fancy GT's or GX's or stuff) with 256 MB,
Athlon AMD64 3200+
1024 MB DDR-SDRAM.
I'm actually very happy about how well Freespace Open runs on this computer.
So, as an answer to your question, if there's not something wrong with other parts of the PC, that GeForce card of yours should probably keep the FPS quite... playable... at all settings on.
