Quote from: Mudbankkeith on November 08, 2013, 01:13:28 PM

Quote from: daemonfox on November 08, 2013, 12:53:28 PM

Quote from: jborkl on November 08, 2013, 01:59:05 AM

To answer the questions.

You will need a power supply with a 6 in pcie
You will need a Higher end CPU cooler or GPU cooler.

I have been having very good luck with the dual antec kuhler shelf setup. This also makes a nice stand for the card. I have also been having very very good results with the corsair H60.

The cards HAVE to have a backplate,or they will have trouble booting (blinking or solid lights).

The boards will still connect but not hash in this state. It is poor contact or poor cooling (same thing).

The boards flex easily and even if you can not see it, it will make your board
1. Not boot, blink
2. Boot , throw a high hash rate but all errors
3. Hash slowly.

More detail please...

TIM or paste on chips?

TIM or insulator and paste on the bottom?

Hashrate using the Chilibug setup and the dual shelf setup?

1,2 and 3 are not 100% correct... I want more hashes... but I am 33-34 GH/s @ 70C with only the Arctic Accelero TT II no backplate using just Fulpoly TIM on the chips and thermal adhesive + mini heatsinks under the chips and VRMs.

EDIT: and where did you get an H60 for $32?

With extra cooling ABOVE the mosfets, I gained another 5Gh up from 32 to 37

I was trying out different coolers last night and noticed something about the chips. The chips aren't just at different heights but are slanted in different directions.

They are slanted so much that the Fulpoly TIM wasn't thick enough to make up the difference. For my first setup I applied Arctic Silver on top of my TIM and reached 36 Ghz. On my subsequent tries with just the TIM I was topping out at 29 to 30 Ghz. When I took the coolers off and looked at the TIM I could clearly see how uneven the chips were. I put Arctic back on top and I was able to get 36 Ghz again.

My thoughts are add some grease to your TIM or add a second layer of TIM to thicken it up.