Noooo! I missed it! Ahg. Out of stock already.
Use a server PSU. There are 2400w platinum ones that are like $160.
You would need at least a 30A circuit to be able to run that. For most household rigs, a dual PSU split over two 15A or 20A circuits is a better option. Server PSU's are also too loud for a rig in a living space. |
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which CPU to pair with this?
Although it should work from a celeron, like the PRO BTC H81 gen 4 motherboard with the G1840, for this I say better go with a good dual core processor. G4500 up to G4560 should handle all those PCIE pretty easily. In Windows though maximum Gpu-s it will allow you to use is 8 while in Linux you can do a bit more. However in Linux is a bit more difficult to configure things out. According to Cryptomined, Windows 10 can handle 8 per driver so you can have 8 AMD and 8 Nvidia on the same rig. He also has a review of this board. https://www.youtube.com/watch?v=efftHIKFjNEhttps://youtu.be/9zU2zHBTg8g?t=83 |
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the problem is not the amount of current, it's mixing grounds from multiple sources
actually grounds from multiple sources SHOULD be connected to have the same potential among power sources. powering USB risers from secondary PSU is OK and works on my farm I would bet BBT has built more rigs than most here. I would take his advice and that of a PSU manufacturer that you should never mix power connections to the motherboard, which is exactly what's happening when you power a riser with another PSU that's not connected to the motherboard. you were told already, when using USB risers you do not send any power to motherboard, dunno what it is so hard for you to comprehend... btw that BBT idiot claimed sgminer in linux do not have RX hashrate drop, guess what? it have... I comprehend that you don't understand USB risers are not electrically isolated from the motherboard and share a 3.3V AND ground connection to the motherboard. You also don't understand what BBT said and is doing. He reached out to AMD and others to see if an issue that affects most miners can be addressed. What BBT claimed and showed was that when he reached out to AMD to discuss the issue about the Polaris line and the Claymore epoch benchmarks figures showing a significant hash drop in future epoch's, in response he received a confirmation from a senior manager at AMD that large professional miners were using SGminer in Linux with OpenCL 2.0 and DO NOT have the same issue, which is what he reported and showed. He also asked the community to verify those claims to make sure they were correct. After receiving feedback from members here and others stating SGMiner seems to be affected as well, he has reached out to AMD again asking for clarification to their original statement. Once he receives a response, he will let everyone know. https://www.youtube.com/watch?v=l3XOtQtFKSQ&feature=youtu.be&t=978https://youtu.be/ZzAbECBnJmY?t=4031https://www.youtube.com/watch?v=PXoPFPqU3Y8&feature=youtu.be&t=4822I for one, applaud BBT for looking out for us and hopefully getting this issue resolved as I'm sure many others do as well. |
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the problem is not the amount of current, it's mixing grounds from multiple sources
actually grounds from multiple sources SHOULD be connected to have the same potential among power sources. powering USB risers from secondary PSU is OK and works on my farm I would bet BBT has built more rigs than most here. I would take his advice and that of a PSU manufacturer that you should never mix power connections to the motherboard, which is exactly what's happening when you power a riser with another PSU that's not connected to the motherboard. |
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As it says in the description of the Thermaltake ATX splitter cable, who also makes PSU's. https://www.amazon.com/Thermaltake-24-Pin-Mining-Adapter-AC-005-CNONAN-P1/dp/B00O0M6Q0CCombine your power needs with the Thermaltake Dual 24pin Adapter Cable. Ideal for crypto currency system builds and extreme gaming, optimize your power with simultaneous on/off functionality to extend your GPU performance. With independent power supplies, take your system further for more mining and ability to meet the needs of multi-GPU power requirements. PLEASE DO NOT MIX POWER CONNECTIONS TO MOTHERBOARD. You should never mix power supplies to devices connected to the motherboard. USB risers are not electrically isolated from the motherboard and therefore it's important that all the risers are powered by the same PSU that powers the motherboard. I also noticed BBT in some of his his latest live streams emphatically recommends that for a dual PSU rig, you need to power the risers with the same PSU that powers the motherboard and only use the second PSU to power the GPU's. https://www.youtube.com/watch?v=lXZondkAWVc&feature=youtu.be&t=1253https://youtu.be/pQ-EAunoAqY?t=988It's true that you should never mix connections to the motherboard, but that's not at all what is happening with USB risers. USB risers do not send power to the motherboard - they send it to the video card. The only thing transferred between the riser and the motherboard is data. Yes, it's using electricity to do that, but at very low levels - for enough power to be sent over that connection to cause damage to hardware, something else would have had to catastrophically fail. Mixing PSUs in general is a really, really bad idea, but if you have to do it, each GPU + Riser should be considered a whole unit. Voltage imbalance between two sources can fry whatever is in between. The video card is what is in between the sources, not the motherboard. I tested the outer pins of the USB cable with a multimeter. There was 3.3V coming from the motherboard to the the connector on the riser and there is also a ground connection between the riser and the motherboard. There is no problem with mixing power supplies if done correctly. As explained by BBT and the link I posted in my original post, the problem is not the amount of current, it's mixing grounds from multiple sources. Which is why you MUST power all the risers with the same PSU that powers the motherboard to avoid ground loops. |
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actually both ways of connecting two PSUs are correct if you are using "USB" risers As it says in the description of the Thermaltake ATX splitter cable, who also makes PSU's. https://www.amazon.com/Thermaltake-24-Pin-Mining-Adapter-AC-005-CNONAN-P1/dp/B00O0M6Q0CCombine your power needs with the Thermaltake Dual 24pin Adapter Cable. Ideal for crypto currency system builds and extreme gaming, optimize your power with simultaneous on/off functionality to extend your GPU performance. With independent power supplies, take your system further for more mining and ability to meet the needs of multi-GPU power requirements. PLEASE DO NOT MIX POWER CONNECTIONS TO MOTHERBOARD. You should never mix power supplies to devices connected to the motherboard. USB risers are not electrically isolated from the motherboard and therefore it's important that all the risers are powered by the same PSU that powers the motherboard. I also noticed BBT in some of his his latest live streams emphatically recommends that for a dual PSU rig, you need to power the risers with the same PSU that powers the motherboard and only use the second PSU to power the GPU's. https://www.youtube.com/watch?v=lXZondkAWVc&feature=youtu.be&t=1253https://youtu.be/pQ-EAunoAqY?t=988 |
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Hey thanks man, so I managed to bios flash my rx 580s all six of them, I was very happy when they started hashing at 27MH after bios mod and 2000mhz memory clock, then even happier when i overclocked with MSI afterburner to get 30.1mh on 2250mhz memory and 1150mhz core clock. Then the strangest thing happened, I have all cards on same settings yet only one gpu is always displaying this error on claymore v9.6 GPU#0 got incorrect share. If you see this warning often, make sure you did not overclock it too much! I tried replacing the gpu pcie slot, putting it on default clock speed (1411mhz/2000mhz) and even reflashing it but still same issue... I'm using combined amd driver from cryptomined channel on win10. any ideas what's going on ? thanks ^^ Download HWinfo, run sensors only and see if there are any memory errors. I've never seen a Bios modded RX 580 that can you can overclock the memory to 2250 MHz and not produce tons of memory errors. |
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1x PCI-E risers will only work on PCI-E slots. PCI slots use a diffrent voltage than PCI-E. If you connect a PCI-E riser to a PCI slot, bad things will happen. Not limited to smoke, sparks and fire. In a multi-psu setup it's important the PSU's share the same ground. The Add2PSU connector is an easy way to do that and it makes the PSU's come on and shutoff together. Using an ATX 24-pin splitter cable is another way. https://www.amazon.com/Female-Power-Supply-Motherboard-Adapter/dp/B013HTWI9GYou also should only use the second PSU for the VGA power inputs. The main PSU connected to the motherboard should also power all the risers and accessories connected to the motherboard to avoid ground loops.  https://bitcointalk.org/index.php?topic=443540.msg4878774#msg4878774 |
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How they detect its been used for mining? The only way is if you label it used as such by buying one their repackaged mining GPU's. Probably best to avoid them anyways. |
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I've spent about €15 today for wood and screws and built mining rigs out of wood, each able to hold 5 cards. Took me 30 minutes to build both.
I don't think you can get much cheaper than getting some wood and screws and building it yourself.
What the motherboard sitting on? Care to post a picture or 2? Also, anyone using anti-static mats under the motherboard (for the metal and wood framed cases), not that you need one? Thanks Wood 1"x2" slabs area good choice for an open frame base because it's non-conductive and you can easily screw motherboard standoffs or a round plastic pen tube cut in to 1/4" sectons in to it. |
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Not true, the Sapphire cards are out we've got about 40 of them running at the moment in our datacenter.
And I'm sure if 1060's were available, people would buy them. The irony is that they're not, and that video is a horrible vid, it lacks any actual comparison of power differences (of which there are) and there's actually a bit of a bump in performance on these cards for the price.
The only advantage to the 1060's is the resell-ability (which there likely wont be for long).
The Sapphire cards may be out, but where can you buy them at MSRP? There is no shortage of 1060's compared to the shortage of RX 4XX/5XX https://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007709%20601205646&IsNodeId=1&bop=And&Order=PRICE&PageSize=15What that video shows is the mining 1060's are in fact just a repackaged basic 1060 with a 90 day warranty manufactured at a huge gain in margins in attempt to cash-in off miners dumb enough to support such a blatant money grab by OEM's. There's no shortage because most of those are mini's or 3G versions. P106 models are 6GB... Better for mining.... Except for 99% of algorithms there is little to no difference in mining performance. Where 6GB makes the most difference is in dual mining. The Dag also won't reach 3GB until a year from now. |
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Absolutely, the Nitro+ is a better mining card with better cooling, a backplate and better resale value. The smaller ITX cards are meant for small form-factor cases.
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Those are not Nvidia cards. They are MSI RX 580 Gaming X 8Gb. |
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Not true, the Sapphire cards are out we've got about 40 of them running at the moment in our datacenter.
And I'm sure if 1060's were available, people would buy them. The irony is that they're not, and that video is a horrible vid, it lacks any actual comparison of power differences (of which there are) and there's actually a bit of a bump in performance on these cards for the price.
The only advantage to the 1060's is the resell-ability (which there likely wont be for long).
The Sapphire cards may be out, but where can you buy them at MSRP? There is no shortage of 1060's compared to the shortage of RX 4XX/5XX https://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007709%20601205646%208000&IsNodeId=1&bop=And&order=PRICE&page=1What that video shows is the mining 1060's are in fact just a repackaged basic 1060 with a 90 day warranty manufactured at a huge gain in margins in attempt to cash-in off miners dumb enough to support such a blatant money grab by OEM's. |
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Lol SP_ ..
I squeeze 39MH/s out of my 1080Ti for eth..with the old genoil miner 1.1.7 didn't even tried the other one yet.
Not too impressive when two RX 470 4 GB cards will easily do 56 MH/s at basicaly half the cost of a 1080 Ti. |
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Those that bought the Nvidia mining cards would have been better off buying a regular 1060 with a 3 year warranty. I suspect these Asus mining cards won't be any different, except you can't get a RX 470/570 and RX 570/580 in any quantity ATM. https://www.youtube.com/watch?v=9deSVpjm1Kk |
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Building your own is better and cheaper. It's also the easiest part about a rig. Getting it working and maintaining it is much harder. There is lots of information on this board and elsewhere that will help you find out what you need. The basics are a motherboard that is known to support the number of GPU's you want to use. There are many options here. Dedicated mining motherboards like the ASRock H81 BTC Pro, Biostar TB85 and Biostar TB250-BTC and TB350-BTC are good options but hard to find unless you want to pay a premium. Other boards that work well are the ASUS PRIME Z270-A / AR which support up to 9 GPU's using M.2 to PCI-E adapters. The next items you need are CPU and RAM that supports the socket type of the motherboard. Common sockets are Intel LGA 1150 with DDR3 RAM and LGA 1151 with DDR4 RAM. All you need is a basic processor, no need to go for more expensive options and 4GB of RAM is enough. It's a good idea to check the motherboard manufacturer's website to make sure the CPU and RAM models are on the recommended list to use with the motherboard. For a hard drive most go with a 120 GB SSD with Windows, again a basic model from a good brand is all you need. If you want to run smOS, a good USB 3.0 flash drive is another option. The PSU is the most important factor in a rig. If your PSU goes down, at best so does your whole rig and at worse it could damage equipment. You need a good quality gold or better rated PSU that can handle the load and has enough PCI-E and Sata connectors for the cards and Risers. Good options are EVGA and Corsair. For ETH and ETC mining, AMD RX 4XX/5XX cards have better performance and dual mining capability compared to Nvidia options that are more expensive. The problem is finding multiple AMD cards without getting gouged is very hard ATM. For Equihash mining, the Nvidia 1070 or 1080 is a good option if it's not much more than a 1070. Scrypt mining like LTC, was taken over by ASIC's years ago and can no longer be mined profitably using GPU's. For risers I recommend going with 6-pin PCI-E risers. They use three thicker wires made to handle a higher draw and four capacitors for a more stable currrent flow compared to the 3 capacitors and thinner wires used by Sata or Molex risers. The 6-pin risers also use a voltage regulator to prevent spikes. For a case I recommend building your own using the BBT mining case below out of two 8ft pieces of 1/8" x 3/4" angled aluminum, one 8 ft 1" x 3" piece of pine and #8 1/2" self-tapping screws. The case will fit up to 7 RX 4XX/5XX if you put them about 1 inch apart. The cost of the aluminum angles and screws was ~$35. If you build it out of all wood, the cost would be less than $10. That's a much better design that allows for good airflow. https://www.youtube.com/watch?v=D5xNrlxsCVs The only tools needed were a drill with a 3/32" hex titanium drill bit to drill pilot holes and a #2 phillips screwdriver bit. A hacksaw with a 32 tooth blade and a plastic miter box to cut the aluminum and wood. The case is very sturdy and can support up to 7 GPU's. BBT also recently uploaded a case build video with a smaller form factor for a four card rig: https://www.youtube.com/watch?v=8n9tgRw_JkMThe benefit of the previous case is it would give you room to expand in the future. Though I would also suggest making the case 1.5" taller from 9 1/4" cuts to 10 3/4" cuts to give you more clearance when using USB risers. |
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