Now before anyone says it, I have read all the "new to WC read here" and "water cooling 101" threads and i'm still at a loss. I just want to water cool my GTX 285, my CPU is being taken care of by the cooler master V8. I have in my possession a thermaltake bigwater 760is but I am not sure which VGA water block to get. Could anyone suggest a good one? I think my 285 is a 891 model. there is are stickers on it that say -10891-0052-100.
My card runs a bit to hot, I hit 100 yesterday so I cleaned it out and i now hover around 80. I would really like to bring that down to 70 or even 60. I have 2 front intakes and one rear exhaust but since the card is so thick it is rather close to the bottom of the case, so the hot air it's putting out via the fan isn't really going anywhere. I also wanted to water cool because I plan on SLIing, and if my one card is running at around 80 I don't think having a 2nd card right next to it doing 80 having the top cards hot air blown down onto it is a good idea. Are there good dual SLI air cooling solutions?
I think your issues is case airflow. What case do you have? What fans and where?
Pull the side of your case, blow a desk or house fan into it on high. Run through your benchmarks, game, etc. See what your temps are. If they drop, you have a case airflow issue. If they remain the same, you need to look at better cooling solutions.
Either way, you should consider pulling the stock cooler and replacing the thermal paste with some better stuff. The factory gunk isn't that great...you would see ~5C better temps by this method alone.