i suppose i should have said my other system specs
abit KN8-SLI
2 gigs OCZ DDR PC3200 (really low timings, but i'm not running it at spec. i dont know much about overclocking memory, so i left it at whatever it defaulted to.)
Athlon X2 3800+ (manchester, 939)
Antec Smartpower 450w power supply (sonata II case...)
the system is fairly quiet, on the previous video card i used a zalman vf-900cu as the video cooler. and at 5v, it was still the loudest component. currently i have an 8600GTS fanless that i bought for someone else's computer, but it's not getting built quite yet. so it's in my rig till i get a card back from xfx.
i'm making some (small) money now, so the 8800GTS upgrade represents about 2 days of work to me.
the video fan isnt such a big deal to me, i believe that the 8800GTS series fans are quiet enough for my needs.
i play pretty much only 1 game. lineage 2. while my rig was a powerhouse a year and a half ago, modern sieges with over 1000 participants on the screen at a single time bring my system to a crawl. worse than a crawl. i generally get under 10 fps in the middle of sieges, sometimes getting pegged at an astounding 0 fps.
i'm just worried that the upgrade to a 8800GTS is gonna do the same thing in a year and a half.
edit: i play at 1280x1024, the max resolution supported by my monitor. unfortunately, L2 is a pretty poorly coded game that no matter how much hardware i throw at it, it will always be sluggish.