I had some time today to build something to close the case of the S5. I still have the miner standing vertical. Closing the bottom of the miner helped in bringing temps of blade 2 down 3 degrees. But covering the top was not as expected and caused blade 1 to increase temps by 2-3 degrees and blade 2 increased by 1 degree. Fan speed increased two steps too. So now I am using vertical setup with standard fan, closed bottom and run the miner at 393.75 with 1280 GH at 43 degrees max.
one fan how cold is the room Ive been thinking of adding some plexiglass at the bottom my self i have a peace laying around cut to fit it . and heat sink two of the chips again . i need them a little more less noise . here one of mine standing up.