Bitfury H board Heatsinks

[AMD FTW]

Is there any interest for custom heatsinks for our H boards. I've sourced a manufacturer that will make a 4" x 4" aluminum heatsink anodized black and I can provide 3m thermal adhesive tape. I have to order at least 400 units or so and they'd take 1-2 weeks to be made up. Let me know if there's interest as I plan on setting this up possibly Monday or Tuesday this week. I'll see how much more it would be to rush the order or if they'd even allow it.

Cost Estimate
Full M board populated would run $180 ($11.25 a board)+shipping
Individual cards I'm thinking $16+shipping

Payment could be in BTC, LTC, PPC

[klondike_bar]

how tall are the heatsinks? Ive been using  4 35x35x6mm heatsinks without issue, and at a cost closer to ~$7 per board

IMO, you only need to focus the heatsinks on the thermal vias. The 35x35mm size is perfect for covering 4 chips without covering too much of the unheated areas of the PCB. Also, the thermal vias for the regulator are VERY important to cool. Copper would be the ideal for just that component, aluminum for the rest.

[AMD FTW]

how tall are the heatsinks? Ive been using  4 35x35x6mm heatsinks without issue, and at a cost closer to ~$7 per board

IMO, you only need to focus the heatsinks on the thermal vias. The 35x35mm size is perfect for covering 4 chips without covering too much of the unheated areas of the PCB. Also, the thermal vias for the regulator are VERY important to cool. Copper would be the ideal for just that component, aluminum for the rest.

The idea was one big heatsink for that covers all the chips, and then a small copper one for the regulator. The heatsink would probably be close to 8mm in height once the 3m tape is applied. I'm still trying to source cheaper thermal adhesive tape. 2 Rolls of this 3m thermal stuff is around 1,000.

If there's not enough interest then I'll probably just buy 1.5 x 1.5 heatsinks already made with thermal tape which is about $2 each and either stick 4 or more on if I decide I want them to overhang a bit.

[tom99]

how tall are the heatsinks? Ive been using  4 35x35x6mm heatsinks without issue, and at a cost closer to ~$7 per board

IMO, you only need to focus the heatsinks on the thermal vias. The 35x35mm size is perfect for covering 4 chips without covering too much of the unheated areas of the PCB. Also, the thermal vias for the regulator are VERY important to cool. Copper would be the ideal for just that component, aluminum for the rest.

The idea was one big heatsink for that covers all the chips, and then a small copper one for the regulator. The heatsink would probably be close to 8mm in height once the 3m tape is applied. I'm still trying to source cheaper thermal adhesive tape. 2 Rolls of this 3m thermal stuff is around 1,000.

If there's not enough interest then I'll probably just buy 1.5 x 1.5 heatsinks already made with thermal tape which is about $2 each and either stick 4 or more on if I decide I want them to overhang a bit.

  I dont understand why not drill holes for heatsink and easy to remove heatsink later.

[tarmi]

yes indeed. why tape, why dont drill some holes?

[allinvain]

Is there any interest for custom heatsinks for our H boards. I've sourced a manufacturer that will make a 4" x 4" aluminum heatsink anodized black and I can provide 3m thermal adhesive tape. I have to order at least 400 units or so and they'd take 1-2 weeks to be made up. Let me know if there's interest as I plan on setting this up possibly Monday or Tuesday this week. I'll see how much more it would be to rush the order or if they'd even allow it.

Cost Estimate
Full M board populated would run $180 ($11.25 a board)+shipping
Individual cards I'm thinking $16+shipping

Payment could be in BTC, LTC, PPC

This is far too expensive. One can buy batches of bags of hundreds of heatsinks (the aluminum ones) for around $40 on ebay.

[ericdc30]

Is there any interest for custom heatsinks for our H boards. I've sourced a manufacturer that will make a 4" x 4" aluminum heatsink anodized black and I can provide 3m thermal adhesive tape. I have to order at least 400 units or so and they'd take 1-2 weeks to be made up. Let me know if there's interest as I plan on setting this up possibly Monday or Tuesday this week. I'll see how much more it would be to rush the order or if they'd even allow it.

Cost Estimate
Full M board populated would run $180 ($11.25 a board)+shipping
Individual cards I'm thinking $16+shipping

Payment could be in BTC, LTC, PPC

I am interested I have a full rig no heat sinks.

Any chance we could get copper?