FIRST PRE TESTING RESULTS / PRE BETAHi Everybody, I'm happy to report that everything is going fairly well and that the first results are positive.
I so far mounted 4 Cards (7950 Gigabyte WF3 with F43 BIOS, BAMT), 5th coming this afternoon. I found the following.
Depending on ambient air temperature (tested at 17-18C outside), I got the thing stable at 67C-72C,
1080W. Hashes average for testing 580-600 kH/s .
For cooling, I used a 24" industrial fan (low speed) which only really pushes air on the edge (design flaw), which is not good at all. It seems a shroud would help a lot to push the air in between the cards and not around the frame.
I'm going to see if I can get some space to allow the cards to stay correctly positioned. Right now, I used a foam spacer otherwise some of them touches (you'll understand when you see the pictures).
Posting again soon.
The 5 cards setup so far. Waiting for #6 and some special parts to customize the rack.
Just a note. Some of us here honestly trying to offer you suggestions have studied heat transfer and worked in the field.
And yes, it is rocket science.
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