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I guess it's easier to bolt them on the non fan end and expensive heavy hardware is best not left hanging.
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Keep on mining till it would be cheaper to buy coins.
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My 280X Tri-X is running DRK, 1160/1800 @ 2300RPM and 70 degrees!
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Thought i should point out that the grid seed is the wrong way up in the pic so will get to hot
Haha yeah it's upside down so the fan intake is completely blocked! You may not even need the fan in scrypt only mode, removing it saves another 2w! |
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The board slots are good, but you won't get 6 to fit. With AMD cards you won't have any performance drop on 1x-16x risers, the USB ones are less than a tenner now on ebay and have bolt holes for easy mounting, this card is light enough to be supported by just the PCI-E slot.
Risers are mostly to keep the card cool, but I have one of those exact cards sat in the PCI-E slot of a BTC Pro with a suspended 280X on either side of it and it mines away at 425Khash at 2500RPM at 74 degrees. Can do up to 480Khash but mine gets crashy at those speeds. The sapphire toxics can reportedly do 560!
And ebuyer have the Gigabyte card for a fiver less!
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You can calculate everything yourself based on the performance reported by others. Just try to get the best Khash/£ ratio.
Depends on the prices/availability of what you plan to buy on Amazon but you may come to the R9 270x OC.
Really no, you want the best efficiency at UK power prices of £0.15-£0.20kwh |
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What about the 1000BTC bet about power efficiency that was supposed to go to charity that Josh conveniently forgot about after the BTC value spiked last year.
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Will a standard AC adapter work for powering gridseeds? I have around five 12v 10a laying around and it's silent unlike standard gridseed PSU. Will they work to power 8 units each? Won't fry them or something?
You must ensure they have regulated voltage output. This means that the voltage they output does not vary with the attached load. It should also output 12 volts when no load is attached.That's electrically impossible. Can you clarify what you mean? Why exactly would that be possible? draw is based on load. IF there is no load, it can't deliver anything. You can't spit electrons into empty air. I'm assuming poor wording, rather than magic  You can't spit electrons into empty air no, but the terminal should still sit at a 12v potential, voltage is not power. Cheap PSU's output often oscillate dangerously when underloaded. |
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6x750Ti or 6x R9 270OC are the best bet unless you want to loose money by the end of the year at latest because of power consumption. UK electric prices are much higher.
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I've been thinking...
Something just doesn't add up with the Armory using Darkcoin. There is absolutely no way any legit darknet site would use Darksend while it is still closed source.
What am I missing?
That homeland security run the armoury? |
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You "cryptoanarchists" are over doing it with wantinbg everything to be open soucre, I agree that Darkcoin should be Closed Source until it has a huge user base like Bitcoin does, then you can open source, if the devs open source Darkxoin before that, this coin will become.overlooked and useless as others mimic Darksend.
I agree somewhat, some things can't be truly transparent and not get exploited. I can't even code and over that last couple of days have considered learning enough to make a darkcoin clone till I read this thread properly and found out about it's closed source nature. A good compromise would be a full audit from greg maxwell and possibly some other trusted contributors to the original idea. |
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Spotted these on your site last night. People are selling these on ebay for £250! £150 is a steal.
I'm in for two. #232
Payment received with thanks. Is the import duty arranged or will we be paying £ 150 then £12.50 Customs+Handling + £30 VAT plus the drive to the sorting office? |
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Fair enough thanks for the link, they look like nice miners.
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If you don't want us to open it then at least show a pic of the inside  Lovely metal box with vents, ethernet and power sockets you have there. |
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Is there anything I can do? Some sort of visual check perhaps to verify the fault?
Noob I'm afraid, I can find my way around when it comes to software but a soldering iron is way beyond my skills.
One other thing - for the modules in the middle of a blade, say around 5 and 13, they can also stop hashing because the ribbon cable can knock loose a nearby capacitor (mounted directly under where the ribbon cable can put pressure on it. Worth some careful inspection...
5 of your 16 workers are not functioning, which gives you about the hashrate you are seeing. So, nothing is wrong in your configuration. However, with 5 modules not functioning, there could be several reasons, including but not limited to:
1) Fuses blown on those modules (upper left of each submodule on the blade PCB, usually marked "FUSE1" or two fuses right next to each other with a "P" on them - see the btmine thread in Group Buy).
2) Bad connection on the pits from the blade board atop the blade connecting to the 4 PCBs of 2 worker modules each (the pins could be bent or misaligned).
3) Power supply marginal, such that only certain modules are getting enough current.
You can check 1) with a voltmeter (some resistance across fuse means it is blown, near-zero resistance means the fuse is fine)
You can check 2) via visual inspection
You can check 3) but putting in a known-to-be-beefier power supply and seeing how it goes
Personally, I'd go with #1, but that's only because that's what I experienced with my own Avalon clone.
Hope this helps! And good luck!
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I guess it's the getting the bandwidth of the RAM maximised in a way the the GPU is smoothly and constantly fed with data. Not sure why, but anything other than 1500 or 1800+ RAM is rubbish on R280X.
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Thats what I had in consideration i think its called binning (transistors) but I believe that they also add some safety margin just in case. Thats why you can always overclock instead of having the oveclock preapplied (notice that it wouldnt be called overclock then) AND that safety margin is the MHz that enough cards (in their opinion) work with that MHz
The new cards do get reliably higher hashrates, but only at certain special frequencies such as 1500 or 1800 RAM on 280Xs coupled with 1080 or 1160 core respectively for 750 and 780-807 khash! |
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stop buying cheap multi rail PSU ??
most cheap PSU specs are wishful thiking
This. My way to stay safe when buying PSUs: only buy Corsair, never had anything die yet. |
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I have a model B raspberry PI which I currently use with my USB miners; however, I also have a SAPPHIRE HD 5830 1GB GDDR5 PCIE just laying around doing nothing.
I am wondering if I can connect the aforementioned graphics card to my PI and then use the graphics card to mine.
If possible, would someone please post like a short instruction guide on what to buy to connect the two and if I need to code anything to establish a connection?
I am a newbie at HARDWARE, so any additional help would be much appreciated.
Thanks.
No that won't work, the cheapest way to get the card mining if you already have a spare USB stick (for scrypt/vert BAMT), 1gb ddr3 and PSU would be either of these boards, the Atom ITX takes laptop memory and would require a riser too. Both are fanless and will draw less than 18w under full CPU load. http://www.msi.com/product/mb/J1800I_.htmlhttp://www.msi.com/product/mb/C847MSE33.html |
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