- Jan 16, 2003
Yes, I have 1 590. The fan shroud is recessed a bit to allow better airflow when two cards are right next to each other in SLI. I don't believe your 6990's have that recess, but I could be mistaken. That could be why one card is at a reasonable temp while the other cooks. Water is the only way for you to go. Let us know what kind of improvements you see. Should be mammoth.