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I would not power two eight pin connectors from one 8-pin PSU cable. Each 8-pin is rated for 150 W, running two off one cable can overload the cable and the PSU connector. I do run a 8-pin (150 W) and 6-pin (75 W) to the same card off of one 8-pin PSU cable. You can also run two 6-pin risers off of one cable.
Sapphire Nitro+ RX 580 will get 30-31 MH/s on ETH + 820-870 MH/s on DCR at ~180 W dual mining compared to the Nitro+ RX 570 4 GB that will get 28.5-29.5 on ETH + 720-750 MH/s DCR at ~140 W dual mining.
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With the Crimson Relive 17.1x.x drivers on Windows v1709 Fall Creators Update, you need to toggle the 'Compute' mode on from 'Gaming' for all the cards in Gaming section of AMD settings.
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ETH is not the only coin you can mine or should mine. Diversification is key to any long-term investment strategy. With GPU mining you can mine many different coins and your costs are essentially the same no matter which coins you mine. The Crypto market is growing faster now than ever before and IMO, that will continue. New coins and innovative ways to harness the distributed computational power of GPU mining rigs are currently being developed which may lead to even more uses for GPU rigs than POW mining.
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Nobody knows for sure what the future is and not every one has the same amount of risk tolerance. If you have money that you are willing to lose, then investing directly in coins and trading may be a better option. Mining has always been a hedge and is a way to invest in to different coins for the cost of your power once the rig is paid off.
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8GB GPU's usually will have faster memory than 4GBs, but for the most part, there is not much difference in hash rate between 4GB and 8GB GPU's of the same model. The benefit of 4GB cards is you can buy more cards for the same amount of money, so you will get a better hash/$ performance. The main benefit with 8GB is slightly better dual mining performance, more overhead for future Dag file growth on Ethash coins like ETH/ETC and better future resale value.
The diffrence between GPU brands is better cooling and build quality on some cards and better overclocking depending on the memory type on the card.
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and btw that 1 gpu that is "off" is dead orr? :p And what memory types do you have i have only micron and elipda ones tho
"algorithm": "cryptonight",
"rawintensity": "896",
"worksize": "8",
"gpu-threads": "2",
"load-balance": true,
"device": "0,2-4",
"auto-fan": false,
"temp-cutoff": "77",
"temp-overheat": "78",
"temp-target": "72",
"api-listen": false, The GPU that is off is a HD 7850 that is mining with the Claymore miner. The Powercolor cards show up as Hynix memory in GPU-Z with dual Hynix/Elpidia timing straps in the Bios.   |
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Coinwarz.com uses real-time data by default. Whattomine.com uses a 24 hour average for difficulty and price by default in it's calculations. You need to change it to 'Current price' and 'Current difficulty' in the sort options to use the current data.
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No. ASIC's are specialized mining hardware. BTC Asic can only mine SHA-256 algorithm coins. ETH/ETC is a Ethash algorithm coin that can only be mined with GPU or CPU.
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i uploaded a screen shot on the imgur link above thnx for the replies, i know the rig seems expensive for the speed but i am expecting future driver developments by RADEON WINDOWS and mobo manufacturer that will uptick the currently and by intent unutilised potential of these GPUS. there is a reason why these cards come with a BIOS switch  and fancy led colour switch, we will get into that later.... So you spent $2K+ more than you need on GPU's to mine ETH because you expect AMD to release a magical driver. OK, make sense now. How about spending that $2K to buy more GPU's and get more hash NOW? LOL. Or AMD may just release their Navi cards which ARE expected to great for mining. https://www.youtube.com/watch?v=Op3h_bV3ohACan you stop shitting on him for his choice of hardware? If you have nothing to contribute, move on. He's here to share his experience with Vegas, and perhaps help some people. We don't care about your opinion on Polaris GPUs. Spending 5K on Vega's to mine ETH is just plain dumb and that's what I want people to know. |
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i uploaded a screen shot on the imgur link above thnx for the replies, i know the rig seems expensive for the speed but i am expecting future driver developments by RADEON WINDOWS and mobo manufacturer that will uptick the currently and by intent unutilised potential of these GPUS. there is a reason why these cards come with a BIOS switch and fancy led colour switch, we will get into that later.... So you spent $2K+ more than you need on GPU's to mine ETH because you expect AMD to release a magical driver. OK, make sense now. How about spending that $2K to buy more GPU's and get more hash NOW? LOL. Or AMD may just release their Navi cards which ARE expected to great for mining. https://www.youtube.com/watch?v=Op3h_bV3ohA |
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MPH makes it easy to mine what's most profitable for your cards on a single pool and then with the auto-exchange feature, cash out in to BTC. The downside are the fees and you don't get to pick when to sell your coins, MPH does and keeps the variance for themselves. One good option if you want to mine coins directly is the BBT multiminer that makes it easy for pool switching on many different algorithms. https://www.youtube.com/watch?v=qrCRu3KLcpchttps://www.youtube.com/watch?v=2qjS17nL-Dc |
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That is one expensive ETH rig for 355 MH/s. I have a 13 RX 480/580 and 570 GPU rig with 385 MH/s Ethash 11000 MH/s DCR dual mining. Rock-solid stable on the ASRock H110 Pro BTC+.  |
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The main difference between CPU's and GPU cores is how they process tasks. You can make an algorithm that's optimized for the sequential processing that CPU's use, but there is nothing that prevents GPU's from developing to do the processing in a parallel. https://www.youtube.com/watch?v=-P28LKWTzrI |
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