If I'm not watercooling, should I leave the plastic shroud on the GPU? I have 5 7950s running on a Gigabyte UD-5 Motherboard mining LTC with no shrouds. I believe they're rather adequately spaced, and I have a big 20" Lasko Cyclone fan pointed at them, yet I'm always seeming to get mid 80s to 90C on the cards. I know some of them aren't spaced exactly right and that will be changed soon. A friend of mine is making some custom open-air wood frames for me that will be stackable so I can put 4 rigs together (two beside and two on top of them) and get a big construction sized fan to blow air through them.
Cards are Powercolor AX7950s and are voltage locked (I'll be buying unlocked ones next time as I know of some now). Powertune is set to 20 on them. Getting about 535kH/s per card with standard riser cables (not powered, but some are on the way to see if it will boost the kH/s and let me drop the powertune to -5 or -10).
I would love to get the temps down a bit on these without having to pay for expensive watercooling. Soon I'll be renting a place to build 4 more rigs and put all 6 in and let the rigs pay the electric bill (my apartment doesn't have the juice necessary to feed 6 rigs like this). Then I'll slowly accumulate more rigs. Any suggestions would be welcomed to get these temps lower! Thanks!
-Moose
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