QuintLeo
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July 01, 2016, 12:24:46 AM |
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<snip> I am definitely in favor of monolithic heatsinks, but I also suggest that double-siding should get better heat transfer to air which should result in quieter fans. However, I'm not a mechanical engineer or heat transfer guy so I don't have the numbers to back that up, it's just an intuition.<snip>
The single problem with mono heatsinks as usually done (on the back of a board) is one of thermal transfer. If a chips is dissipating more than 10-15w then great care has to be taken regarding thermal vias and contact bumps on the board/heat sink interface to make sure enough heat can flow from the chip through the board/vias to the sinks. Even if done properly a naked chip is still going to run a fair bit hotter than one with a topside heat sink which in turn will directly set what the maximum speed/Vcore can be. Now maybe if the chips can be mounted on one side of the board and all other components in the other to allow a single large heatsink contacting the tops of the chips-- that could work as it takes the boards thermal resistance right out of the picture. Trying to heatsink a chip THROUGH the board is just a nightmare of inefficiency. VERY VERY bad idea. On the other hand, trying to get multichips to make good contact with a single HS on top of them isn't fun either - but it's a TON more efficient when you can get it to work.
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sidehack (OP)
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July 01, 2016, 01:01:15 AM |
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That's another reason why I like the idea of heatsinks on both sides. As long as all the chips start out coplanar, the one heatsink will keep them pressed flat and tight to the other. I know some people complained about S5 because the boards could warp due to screw placement and some chips wouldn't make good contact. That's a lot less of a problem with a good sandwich.
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QuintLeo
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July 02, 2016, 01:46:12 AM |
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Yeah, both side nice SOLID heatsinks would tend to help with making good reliable thermal contact long-term.
Might be a little more expensive, but heatsinks don't cost all THAT much.
That reminds me - why do you keep specifying you are locked into the "1 kilowatt power consumption" ballpark on the design?
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I'm no longer legendary just in my own mind! Like something I said? Donations gratefully accepted. LYLnTKvLefz9izJFUvEGQEZzSkz34b3N6U (Litecoin) 1GYbjMTPdCuV7dci3iCUiaRrcNuaiQrVYY (Bitcoin)
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in2tactics
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July 02, 2016, 02:30:01 AM |
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Yeah, both side nice SOLID heatsinks would tend to help with making good reliable thermal contact long-term.
Might be a little more expensive, but heatsinks don't cost all THAT much.
That reminds me - why do you keep specifying you are locked into the "1 kilowatt power consumption" ballpark on the design?
Based on the below quote from the OP ... possible features for a consumer-grade miner ...
I would say that 1KW is the target because the design is for a consumer-grade miner and 1KW is a sweet spot for those folks operating on 110V PSUs. I could be wrong though and I am sure sidehack will correct me if am. ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
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Current HW: 2x Apollo, 2x Apollo BTC, 2x Apollo II Retired HW: 3x 2PAC, 3x Moonlander 2, 2x AntMiner S7-LN, 5x AntMiner U1, 2x ASICMiner Block Erupter Cube, 4x AntMiner S3, 4x AntMiner S1, GAW Black Widow, and ZeusMiner Thunder X6
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sidehack (OP)
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July 02, 2016, 04:09:11 AM |
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It's been mentioned a couple times, but this is not my project. Basically, I have been asked to oversee design and when I say "those attributes are fixed" what I mean is "those attributes are fixed by the person footing the bill". Y'all know I'd rather see something sub-500W, and my own projects will be. Actually ... the overarching project specific to this thread is more I am helping some people ... it'll be me doing a job for someone else ... This will not be a GekkoScience product
what's been requested is a 10TH miner, so if the assumption is current-gen chips in the 0.1J/GH neighborhood, then the assumption is 1KW at stock settings.
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in2tactics
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July 02, 2016, 04:47:20 AM |
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It's been mentioned a couple times, but this is not my project. Basically, I have been asked to oversee design and when I say "those attributes are fixed" what I mean is "those attributes are fixed by the person footing the bill". Y'all know I'd rather see something sub-500W, and my own projects will be. Actually ... the overarching project specific to this thread is more I am helping some people ... it'll be me doing a job for someone else ... This will not be a GekkoScience product
what's been requested is a 10TH miner, so if the assumption is current-gen chips in the 0.1J/GH neighborhood, then the assumption is 1KW at stock settings.
Well, I stand corrected. I need to pay more attention to which thread I am posting in because you have a lot of miner related threads. ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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Current HW: 2x Apollo, 2x Apollo BTC, 2x Apollo II Retired HW: 3x 2PAC, 3x Moonlander 2, 2x AntMiner S7-LN, 5x AntMiner U1, 2x ASICMiner Block Erupter Cube, 4x AntMiner S3, 4x AntMiner S1, GAW Black Widow, and ZeusMiner Thunder X6
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sidehack (OP)
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July 02, 2016, 05:20:01 AM |
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This is the only miner design one I've started in a long time. I have sorta laid claim to the Community Miner Development thread, but it's technically kilo17's home turf.
This has been a good one though, for sure.
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Mr. Kashif
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July 06, 2016, 09:00:51 PM |
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Why does this thread seem to be asleep? ![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
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sidehack (OP)
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July 06, 2016, 09:12:56 PM |
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Maybe everything's been said that needs to be?
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Mr. Kashif
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July 17, 2016, 07:36:35 PM |
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most of it.
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Unacceptable
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July 17, 2016, 10:58:55 PM |
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Why does this thread seem to be asleep? ![Huh](https://bitcointalk.org/Smileys/default/huh.gif) Cause we all got our chips & are already building our miners!!! ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
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"If you run into an asshole in the morning, you ran into an asshole. If you run into assholes all day long, you are the asshole." -Raylan Givens Got GOXXED ?? https://www.youtube.com/watch?v=9KiqRpPiJAU&feature=youtu.be"An ASIC being late is perfectly normal, predictable, and legal..."Hashfast & BFL slogan ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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Gahs
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July 20, 2016, 02:26:18 PM |
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1.) An integrated controller will conserve space. 2.) A generic bus would be nice 3.) Hashboards having sub-controllers 4.) If there is a way to control clock speed so as to reduce the noise level; you'd sell out fast 5.) If there is a way to reduce heat output; you'd be in constant demand.
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sidehack (OP)
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July 20, 2016, 02:37:27 PM |
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That's pretty much what I came to as well. Additionally, notes 4 and 5 (assuming "heat" is derived more from adjusting core voltage than clock) are mandatory requirements.
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HerbPean
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September 09, 2016, 07:21:57 PM |
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isoneguy
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October 30, 2016, 10:34:49 AM |
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From my personal opinion...the most important design specs for small scale mining devices are as follows:
1. quiet (large scale mines can easily use loud data center equipment) 2. portable (heavy devices that cost 200$ to ship lose value quickly) 3. chain-able using easily replaceable and common connectors (usb or cat5/6 like the silverfish) 4. cheap non miner components (i don't want to replace a 50$ proprietary part to use a 20$ miner) 5. easily controlled, either a built in controller or a raspi/pc controller option 6. WiFi option (either built in or optional on the controller) 7. stack-able (connect small modules together to make a bigger robot) 8. decently made (I don't want it falling apart before it gives me a chance to use it) 9. easily powered using an existing powering method (usb, 6pin pci, or 12v barrel plugs) 10. variable clock speed/voltage 11. future proof blade design/re-useable case (it would be nice to be able to upgrade the blade with more efficient chips in the future. This way you don't have to discard 20% of the cost of the miner after the end of life period.) 12. worked on by gekkoscience 13. other awesome un-contemplated features.
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Dank14
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October 31, 2016, 12:07:31 PM |
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I quite agree that a miner should be quiet and portable, should not occupy too much space but most importantly is the price of a new miner... it is possible to make budget miners for those on a tight budget?
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Eagleone
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October 31, 2016, 05:44:40 PM |
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Hi all,
Call me crazy but I want a KNOB, is that too much to ask? Control buck converter, core clock, and fan speeds on 6+ miners with a thermal override so as to avaoid hard shutdowns like the s7
Rackmountable, I want to start colocating these things so a clean rack apearance is a must (6U or W.E. works)
- string of miners off a PI would be a must - wifi is cool - 5 or 10 pcie sockets, 1200 watts maximum so we can use the little HP guys you sell, maybe 750 so that 2 could hook up to an ant miner psu.
My machines live in liscence grow ops in Detroit and The Bay
Detroit is 3 cents For primary hook ups and we have TONS of space Trueco2oil.com that's me and we don't steal anything
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NotFuzzyWarm
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November 01, 2016, 02:30:25 AM Last edit: November 01, 2016, 01:13:38 PM by NotFuzzyWarm |
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Hi all,
Call me crazy but I want a KNOB, is that too much to ask? Control buck converter, core clock, and fan speeds on 6+ miners with a thermal override so as to avaoid hard shutdowns like the s7
Rackmountable, I want to start colocating these things so a clean rack apearance is a must (6U or W.E. works)
- string of miners off a PI would be a must - wifi is cool - 5 or 10 pcie sockets, 1200 watts maximum so we can use the little HP guys you sell, maybe 750 so that 2 could hook up to an ant miner psu.
My machines live in liscence grow ops in Detroit and The Bay
Detroit is 3 cents For primary hook ups and we have TONS of space Trueco2oil.com that's me and we don't steal anything
3-cents eh? Hmm. I have 7 semi-retired s7's using Sidehack under-volt/clock mod that pull 930w each and I'm Detroit area. Care to host them? Calc says @ 3 cents they would be good for $1.65 per-day each after deduct for power cost. For that matter, if they can go to a good home... Trueco2.com - Wonder if Chronic Releaf here carries you? Last few oils I got are from Illuminati Extracts (also CO2 process).
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