A heads up to those wanting to use PCIe splitters/switches.
Well, after 129 miner restarts in SMOS I've finally gotten my 8 GPU rig mining stable for 16 hours straight. I'm using Supermicro boards in my operation to have IPMI and limit having to move rigs or monitors around to troubleshoot. Once the kinks are worked out its great! Anyways my board only has 7 PCIe slots so I've been experimenting with splitters to get me to 8 cards. Its been a long road. I started with a couple of those x1 into 4 USB cards which kinda worked if I was running less than 6 total GPUs and no more than 2 cards on each splitter. They are funky. I could run 4 on the board and 2 on the splitter for days but if I added 2 more to the board I had constant crashes. I spent an immense amount of time messing with the PCI gen, MCFG setting (base address for PCI devices) with mixed results. Finally as I gave up yesterday and put 2 cards back in another rig my x16 to 8 USB splitter finally arrived! I threw it in and hooked up 6 GPUs to it and I'll be damned it ran for 30 minutes no problem. I said screw it and grabbed 2 more cards again and had some rejected shares. Switched the slot back to PCI Gen2 and what do you know. Haven't had to reboot yet. Obviously its known your mileage will vary using splitters like this. It won't magically make a 20 year old motherboard support more cards. But if you have a modern-ish board that doesn't have enough slots it may be the ticket. I know people have had luck with those 4 GPU splitters I'm still not sure why they were so unstable for me but hey this works. Only needing one x16 slot to run cards I may just opt for a dual CPU board and do some CPU mining as well if a new CPU only algorithm triumphs over Cryptonight. x1 switch - https://www.amazon.com/LinkStyle-Extender-BitcoinLitecoin-Adapter-Ethereum/dp/B078YQMF7F/ref=sr_1_15?s=electronics&ie=UTF8&qid=1521395139&sr=1-15&keywords=x1+to+4+mining+riser x16 switch - https://www.amazon.com/Motherboard-Express-Graphics-Adapter-Machine/dp/B07571T721
Up to $120 bounties for answering altcoin mining questions
I'm thinking about sinking some major money into mining. Probably $15,000 to $20,000. Not all up front but sliding into it pretty quickly. I've got about three rigs up and running with ethereum but I have several issues I want input on. I am setting aside a $40 bounty for the three top answers ($20 for the top, two $10 for the runner ups) paid in bitcoins. I will be posting this in several places. If there is a REALLY good answer I will offer an additional $80 (total of $100) for the top answer. This is my research that may save me from making a big mistake. I live in the Midwest with temperature that hits 100f / 38c for 3 to 4 consecutive months a year. I want to run this operation in my garage. Cooling. This is by far my biggest concern. I live in the Midwest with three months of 100f / 38c per year. I've dealt with this before with litecoin. I don't want to have to air condition. In my previous experience fans aren't adequate. Will this gpu be able to stay cool at the temps I've mentioned without air conditioning? http://www.newegg.com/Product/Product.aspx?Item=N82E16814131676 If not … does anyone have experience using dialetric fluid / oil to submersible the cards in? I'm going to have to cool the oil somehow right? Is there a book way to do this? (Drop sealed containers of ice in the vat, pump it thru an oil radiator? Hardware. As linked above I'm leaning towards the 390X to try to retain value a year from now. I'm thinking of using this motherboard http://www.amazon.com/ASRock-Motherboard-H81-PRO-BTC/dp/B00HEUIS2G USB risers. http://www.ebay.com/itm/Powered-PCI-E-Express-1X-To-16X-Extender-Riser-Card-With-60CM-USB-3-0-Cable-/301105921855?hash=item461b4fbf3f:g:oGMAAMXQuTNTMSBV Mining. Has anyone developed a proprietary ether miner they are selling? Has vertcoin or monero mining stayed profitable with a .09 kw electric rate between the litecoin dropout and today if you are able to get a good cooling (non ac) system in place? Power. I'm leaning towards this as my PSU. http://holybitcoin.com/product/dps-2000bb-breakout-adapter-board/ (I know I'll have to install a fan for the PSU). I'm fairly comfortable with the electric side of things until it gets to the PSU (I understand amps, volts, watts, and required wire gauges. Any warnings on running server PSUs?
Hi, I'm Cablesaurus. As Reddit has plugged into the Bitcoin world, many here may be wrestling with the complications of securely mounting accumulating graphics cards and mining rig gear; getting all cards to recognize; or how to utilize all possible motherboard slots for Bitcoin purposes to save hardware costs A few things new miners should be aware of:
* PCI Express extenders can be used to greatly increase airflow between your cards * Mounting solutions are available for those strugging to securely mount cards * You can use x1 PCIe slots to power any mining card just as fast as when plugged directly into an x16 slot. Adapters are available for the curious. * PCI to PCI express slot adapters are available for those running out of slots. A PCI slot can be converted to run a mining card at full speed from an extender.
Some of these solutions can save the miner a large wad of cash in startup hardware costs. To find more basic information, check out the Bitcoin forums or visit our site @ www.Cablesaurus.com I'll be glad to help answer any questions Reddit has about the use of such solutions, or just general questions for me! - Feel free to post! Warm regards, Cablesaurus
I've decided to start a rack of dedicated bitcoin miners and I am planning the parts right now, but I have a few questions. Q1. 5770 Single Slot vs 5830? Q2. Is overclock worth it in the long term (since the warranty is no longer valid)? Q3: Anyone have a decent Mobo link? I'm trying to figure out what mobo would be good for a 4U case and a power supply to go with it to match the number of PCI-E slots maxed out. Old Rig Specs:
Now for logistics: I own a 5770 (old one) and it only gets 175 MHash, so the spreadsheet is wrong on that account. It would seem 5830 would be my best bet if they're still stocking it next month. Although the single slot 5770 would be nice too. Table time. Note I am using 175 MHash for $/MHash calculation. Component|Description|Source|Amount+Shipping :---|:---|:--- Chassis|Middle Atlantic RC-4|Amazon|$54.99+$9.99 Power Supply|Rosewill Green Series RG530-S12 530W, 80 PLUS Certified|NewEgg|$49.99 Motherboard|ASRock M3A770DE|NewEgg|$59.99+$4.99 CPU|AMD Sempron 140|NewEgg|$37.99 Memory|2x 1GB DDR3|NewEgg|$25.98+$1.98 Graphics card|XFX 5770 Single Slot|NewEgg|$126.99 PCIe x1 adapter|Extender Cable PCI-E 1X Riser Adapter|9mart|$9 Storage|Recert Western Digital Caviar 80GB|NewEgg|$16.99 SubTotal|Approx $1.66/MHash w/ 1 Card||$271.89 SubTotal2|Approx $0.96/MHash w/ 3 Cards||$525.87 Optional| Rack|StarTech 2POSTRACK 42U -- about ten 4U/Rack|NewEgg|$119.99+$36.47 Total|With Rack + SubTotal2||$682.33 Some things to note: I want to find the best solution to the card per mobo with a decent power supply. I also want to add joule rating cost for the components on the table.
***** We Do Stuff https://www.youtube.com/wedostuff We Do Gaming https://www.youtube.com/cha... USB Powered Risers GPU mining Litecoin Bitcoin - Duration: 2:15. d 82,582 views. 2:15 . DIY: Multimedia Bluetooth Boombox Speaker - Duration: 24:07. DTeK Recommended for you. 24:07. PCI-e USB ... Hey Miners, In this video I talk about my experience with the pci-e splitters, so you can add more GPU's to your motherboard. It may or may not work as intended in your situation, but it did, in ... I tried out some 1 to 3 PCI-E Riser Extenders with my motherboards. On both Asrock PRO BTC H81 and Anniversary B85 I was able to get an extra GPU working in windows, for a total of 7 GPU's on each ... Today i show you shortly how to install your PCIe Risers properly, many requests asked me about how to do it and what is safe. So here is the answer that a f...