These dragon miners only cost like $4.5k if you avoid the middle man.  |
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It usually means your power cable has worked itself loose. Try pushing them firmly back into the PSU again. |
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MID march batch of 8 chip HEX8A1 sold out.
Starting End of March batch with new price.
First pieces from end of feb batch shipped out
I was looking at them today and no indication they were running out. I miss the old system where you could see how many were left in the batch.  |
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Does Marto have these in stock I wonder? I'd order some but "March" is pretty vague. 1st March is good, 31st March is meh!
Nice review and pics as always.
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Is there someone that have replaced the noisy fan and running stable @260/1000 ?
Impossible! But does depend if you win the silicon lottery, I see there are some more efficient A1 chips out there, and how cold your room is. Best I've seen on the pre-production lot was someone running 230/950 with more quiet fans blowing down the sides. It would need a larger heatsink area, if only I could get a 3rd fan on top! That industrial heatsink is made more for durability than surface area, but you could increase surface area by cutting slices across it. There's a flat area under the heatsink (4.8x10cm) where you could attach a CPU/GPU heatsink and 92mm fan or even a water cooling block to a radiator! Wow, as this is my only bitcoin mining machine, i will not modify it "too much" until i reach ROI. Changing the fans is a modification i can handle, changing the whole heatsink is too risky for now... I wasn't saying rip the old heatsink off, just add some more heatsink to the flat space under the original one. Something like this (200x99x45mm) should accommodate another 2x quiet fans and in theory add another 200W of cooling for £25/€30. http://www.ebay.co.uk/itm/271196219864?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649or just be happy when running 215GH/250W @ 220/900 that you're running it at best power efficiency, 0.86GH/W 1.16W/GH in my case. |
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No problems with sapphire here. 7950 are crap cards (they're failed 7970's) I don't use them. When the fans die we just strap 92mm case fans on with cable ties.  |
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How to Get Maximum output from following hardware config?
I'm using GUIMiner
Server: Slush's pool
i get three options under Device
[0-0]Devastator
[0-1]Hainan
[0-2]AMD-A10-5750M
which device selection help in increase speed Run GUIminer three time and run all of them together. Good luck keeping everything cool and not killing your laptop! You should really mine Litecoin on PC, you'll not cover your power costs with Bitcoin. |
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Is there someone that have replaced the noisy fan and running stable @260/1000 ?
Impossible! But does depend if you win the silicon lottery, I see there are some more efficient A1 chips out there, and how cold your room is. Best I've seen on the pre-production lot was someone running 230/950 with more quiet fans blowing down the sides. It would need a larger heatsink area, if only I could get a 3rd fan on top! That industrial heatsink is made more for durability than surface area, but you could increase surface area by cutting slices across it. There's a flat area under the heatsink (4.8x10cm) where you could attach a CPU/GPU heatsink and 92mm fan or even a water cooling block to a radiator! |
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Martin,
Sorry to go off topic, but are you going to be making a board for the Hashfast chips? I noticed they were selling hem on the web today.
From Hashfast:
The Golden Nonce Chip is a leading-edge Bitcoin mining ASIC with 800 GH/s performance and low (best-in-class) power consumption.
Golden Nonce ASIC Chip Highlights:
High performance 28nm ASIC mining chip
Hashing Output: Up to 800 GH/s (overclocked)
Interesting, http://hashfast.com/shop/chipsales/ but I'm really looking forward to hear about plans for Bitfury 2, I did hear a rumor test chips would be available end of February? I'm saving up my Bitcoins for Marto's next creation! |
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That's a pretty cool (literally - check those temps) miner; courtesy of the slightly noisy fans, perhaps, but those could be swapped out. Mining calculation: http://thegenesisblock.com/mining/a/cacfec10d1Parameters: 1.05TH/s, 880W, $6200, March delivery, no ship/accessory fees, current bitcoinaverage.com rate. Play with the figures at your own peril  ( Something wrong? Calculator error? Let me know, post will be adjusted. )Yeah www.lketc.com = 27000 Chinese Yuan = $4427 US Dollar, not $6200! $6200 = buy 2 get me 1 free. And difficulty increase is 46-50% per month. (19-20% every 12 days) not 63% It might just break even then.  |
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nooo
as far it is in conteact with rechtange area of the ASIC's
My bad, just looked at the pics a bit closer and see what you mean. Shame. Do you plan on changing the design? They did originally have both heatsinks running in the same direction. That would have allowed for stacking them on their sides and using cable ties in the fan holes to secure them together and putting one large fan on one side an blowing over both heatsinks.  |
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A fast question, there is any solution for that the hex16a2 mini USB power dont give backward 5volt ? When i cut the usb cable red and black cables, then the board dont work.
Thanks.
Wierd, when I taped out the outer pins on my troublesome Hex16B board's cable, it worked fine. (also work on Hex8A1, but it was something else that was the problem, needed a fan on the 5v PSU line, to help regulate the PSU.) Are you sure you didn't damage the data cables? If you are, try adding back the ground. If that don't work you could try +5v and ground powered from a 5v PSU line (Red/Black), with more Amps in the PSU it shouldn't flow back, and PSU is designed to handle bad loads if it did. Hy! I dont have 5 volt on the PSU. At the first moment was worked. And then when i restarted the PSU the board Led don't Light up and the Rpi dont see the board. When i plug the red/black back then works fine. The fan worked fine on all two try. Raspberry Pi is crap has a history of USB/Power issues. If you use a TP-Link TL-3020 as your mining PC it won't care if the USB leaks power or not. That's another way I found to handle a leaking miner, stick it directly on it's own TP-Link TL-3020. |
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280x at stock is nowhere near 300W
Reference clocks, yes, but it has been designed to be able to call on 300W at peak load and chips vary in their power requirements (silicon lottery). You only need a nano second spike in power demand to crash your system and it all depends how far you push your overclock, too far causes crashes. Then you've got to ask why Sapphire decided to put 2x 8-pin (375W) on their 280x Vapor-X OC (My guess 8+6-pin wasn't enough for overclocking!) http://www.eteknix.com/sapphire-amd-radeon-r9-280x-vapor-x-oc-3gb-graphics-card-review/15/ |
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Very clever! I "respect" them as businessman. That's how business works. The strongest dog fucks...
Not very clever. That's how wire fraud works. If they took money to build a 20nm mining machine from Americans, and don't deliver because they spent it on something else, expect to be extradited by the FBI shortly! Hopefully they will have something by the end Q2 2014 or they buy a nice house in Russia/South America.  |
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I am still not sure what settings should I use, because the outside of the heatsink is still getting pretty hot und almost untouchable
The rule I use is can I keep my hand on it for 10 seconds. Are you still running them 260/1000? |
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Thinking about buying the 130 GHs version, but looking at router image in downloads section, what version should i use?
It is not very clear to me (not 100% sure when looking at download section of technobit website)
Kan some one give me link to version to use? Marto maybe?
It's 0.2.0 Milestone release http://www.megafileupload.com/en/file/497695/0-2-0-rar.htmlThat's all you need to flash a TP-Link TL-3020 router into a 2Watt mining PC. If you have a factory new TP-Link you go to the firmware update menu and load up the x-factory.bin file. If you want to upgrade one already turned into a miner you go to the firmware update menu and load up the x-sysupgrade.bin file. |
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Yeah really bad right now, every month the difficulty is rising 50%. March will probably be worse. Wait for difficulty to level off before getting into mining. If you're interested in Bitcoins, you would do better by playing the rise and falls in BTC price on an exchange. I'll probably never mine my 8.8BTC back even though I have 700GH mining right now, I wish I'd left the BTC in my wallet. If I could go back in a time machine to Nov 19th 2013, and tell myself this, I probably wouldn't believe it though! |
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Think about what I said though, someone out there somewhere is deploying 50% of the networks total hashing power, every month! And you can bet it isn't us little guys!  Mining is a really bad investment right now.. |
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Minion ASIC - Tapeout complete
23/02/2014: We are happy to report that VeriSilicon has completed our Minion ASIC yesterday and taped out to Global Foundries today.
Black Arrow is working hard to improve the existing designs of our miners and ensure that the pre-ordered miners will be assembled and dispatched immediately after the chips arrive from the factory.
I had a crypto meetup today and we were talking about BA. Glad to see the tapeout completed. BA and Asicminer are on my watch list for ASIC development. Should I pay attention to any others right at the present moment? BitFury 2nd Gen. But no idea when. Supposedly soon though. Everything is slated for March even BF2! If you are April or later delivery you're ROI is gonna be toast! Difficulty is rising 50% pm! |
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Splitting hairs here, but that's CGminer 3.12.3, and I seen Marto's screen shot (a couple of posts up) with version 4.0.0. This is new version still in tests A fast question, there is any solution for that the hex16a2 mini USB power dont give backward 5volt ? When i cut the usb cable red and black cables, then the board dont work. Thanks. Wierd, when I taped out the outer pins on my troublesome Hex16B board's cable, it worked fine. (also work on Hex8A1, but it was something else that was the problem, needed a fan on the 5v PSU line, to help regulate the PSU.) Are you sure you didn't damage the data cables? If you are, try adding back the ground. If that don't work you could try +5v and ground powered from a 5v PSU line (Red/Black), with more Amps in the PSU it shouldn't flow back, and PSU is designed to handle bad loads if it did. |
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