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alpha754293 wrote:Have you considered running liquid cooling for the entire system in order to improve your systems engineering management? Just another thought.
I think that if you were to have all of the systems up and running, you expecting anywhere between 240-270k PPD right?
Atlas Folder wrote:The GTX295s have proven to be a bit tweaky en masse and I haven't found the cause/solution yet. I have one, sometimes two, GPUs per machine in EUE at any given time. That's one reason the rig has not hit its maximum potential yet.
Atlas Folder wrote:Water cooling isn't practical. The expense, the risk to the cards of modification and voiding the warranties on $9,600.00 worth of video cards is not something that I can justify. It also makes ebaying them one day to upgrade to 395s more difficult. I can see it now... For Sale: 19 water cooled GTX295s, never used for gaming.
The GTX295s have proven to be a bit tweaky en masse and I haven't found the cause/solution yet. I have one, sometimes two, GPUs per machine in EUE at any given time. That's one reason the rig has not hit its maximum potential yet. I don't believe its temperatures, the cards all run with fans at 100% and the temps sit at 72 degrees C or lower across the board. One machine seems to have a motherboard problem for instance -- one of the GPUs in any card I put in that slot will not function. I've changed power supply cabling as well. That particular half of any card I put in the slot doesn't work.
The heat output isn't *that* bad; it's like standing in front of a wall of low-wattage hair dryers. Or maybe 4 restroom hand-dryers... I'll shoot a little video of it tonight and post it somewhere because it *is* pretty loud.
No, I was not burning beta WUs yesterday so my PPD saw a huge jump.
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