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You must have a defective Nitro+ card or you have the card in a location without airflow around it. The heatsink is much larger on the Nitro+ compared to the Pulse cards which also don't have open heat pipes. There is no way the Pulse cards would run cooler than the Nitro+ with the same settings. I can overclock some of my Nitro+ RX 580 cards to 2250 MHz memory while the Pulse only handle 2100 MHz running at 72C while dual mining and having a fan blow directly on the cards, otherwise they would hit 78C. The dual Bios switch on the Nitro+ cards is good to have for loading two different optimized timing straps for mining different algorithms like ETH and XMR.
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I have Asus, MSI, Powercolor and Sapphire RX 570/580's. I have the best results with the Sapphire Nitro+ non SE RX 580 cards. Both the SE and non SE cards overclock well after a simple Polaris Bios Editor v1.62 'one click timing patch' Bios mod and run cool. The non SE cards are cheaper and I prefer them. The blue RX 580 SE cards also have annoying blue led fans that can't be turned off.
From a mining aspect, the Sapphire Pulse cards are good for dual mining but run much hotter and don't overclock as well as the Nitro+. I wouldn't recommend getting the Pulse cards if the price difference is $25 or less. No dual Bios switch on the Pulse card either.
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The screw holes on a motherboard are made to be isolated, but you don't want the motherboard laying flat on the base. Most cases uses use brass standoffs with metal machine screws. You can make plastic standoffs by cutting a round plastic pen tube in to 1/4" sections or use some spacer bushings and then use wood screws. https://www.amazon.com/gp/product/B005C0L5O8 |
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An electircal panel will often have several 15 AMP or 20 AMP circuts thought the house. You can find which outlets are wired to each circuit by plugging in a lamp and seeing which breaker controls the outlet. If you have or install a 240V circuit you can also run twice as many Watts for each circuit.
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Until this year I was mining with a Dell XPS 700 with DDR2 RAM and PCI-E 1.1 slots. I still use it as a test bench and have RX 580's that get 32 MH/s+ dual mining on it. As long as there are enough system resources you shouldn't have a noticeable performance loss, especially using powered risers. The main issue you may have is if the card draws a lot of power from the PCI-E slot instead of the VGA power connector. Older motherboards don't support constant high power draw through the PCI-E slot as more modern motherboards.
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You need to Bios mod the memory timings to maximize the Ethash hash rate with AMD RX series Polaris cards. The easiest way is to do it in Windows using the PBE v1.6.2 'one click timing patch' bundled performance timings. They work great for most of my cards. https://github.com/jaschaknack/PolarisBiosEditorThen flash the modded Bios back to your cards after backing up the original Bios with Atiwinflash. https://www.youtube.com/watch?v=Syaf6o1SEUcAfter modding the Bios and increasing the memory to 2000 MHz for RX 570's you should get 28-29 MHs and up to 31 MH/s with a 2250 MHz memory overclock for RX 580's. |
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Yes, two 6-pin risers per 8-pin PCI-E PSU cable or even three since some of the PSU cables have a 8-pin + 6-pin pigtail. I also use the 8-pin splitters to power the 8-pin + 6-pin VGA power on some of my cards. I wouldn't use them to power two separate 8-pin VGA power connectors on two different cards though since that can pull close to 300 W when dual mining and overload the PSU rail.
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Server PSU's are made to run in an isolated server room with no regard to how loud they are. For a living space, you are better off with an ATX PSU. Larger server PSU's over 750 W are usually only compatible with 240V as well. I recently ordered one of these dual 120V 2400W PSU's for my ASRock H110 Pro BTC+ build. It has 18 PCI-E 6+2 connectors that I use for the GPU VGA power inputs. Total cost through PayPal was $181 and shipping via DHL direct from the manufacturer was very quick. http://www.panto-tech.com/products/206-110v-260v-power-supply-2400W-for-miner.htmlFor a while it ran quiet at less than 50% of the capacity. When you run it at more than that, the fans got progressively louder the more wattage you pull from it. Recently the fans started running louder and it became annoying to deal with the constant high pitched whining sound. It also developed an issue where when the fans spun down, the voltage would drop momentarily and the hash on the cards would drop until it stabalized. I got tired of dealing with the noise and switched to a triple ATX PSU setup with a triple ATX power adapter cable. https://www.aliexpress.com/item/New-24-Pin-20-4Pin-Triple-PSU-ATX-Power-Supply-Adapter-Cable-18AWG-Wire-For-Mining/32827769189.html? |
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I have run AMD and Nvidia cards on the same Windows 10 Pro v1703 rig without issues. Just be sure to run DDU in safe mode to remove ALL the installed GFX drivers and disable the Windows automatic driver install. After shutdown, I connect the AMD cards and install the AMD blockchain drivers. I also install an AMD card in the primary x16 PCI-E slot and connect the monitor or dummy plug to that card. https://support.amd.com/en-us/kb-articles/Pages/Radeon-Software-Crimson-ReLive-Edition-Beta-for-Blockchain-Compute-Release-Notes.aspxYou also need to run the pixel patcher after the driver install with RX 470/480 and RX 570 cards that have a modded Bios to disable the driver Bios signature check, or you will have a code 43 error in Windows Device Manager. https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-PatcherThen I shutdown and connect the Nvidia cards and install the drivers. I've had the best results with the 385.41 drivers on Windows 10. Newer drivers aren't as good for mining in my experience. http://www.nvidia.com/download/driverResults.aspx/123219/en-usIn the Windows 10 Pro Group Policy Editor you can keep Windows Update from updating the the drivers on it's own. gpedit ==> Computer Configuration ==> Administrative Templates ==> Windows Components ==> Windows Update and set 'Do not include drivers with Windows Update' to enabled. The only problems i've had is when I move cards around to different PCI-E slots. The Windows registry keeps an identifier for every card installed in a PCI-E slot and if I move an AMD card to a slot where a Nvidia card was installed, sometimes it will prevent the driver from loading. Always run DDU in safe mode to remove the drivers before installing any cards. |
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I have Sapphire Pulse, Nitro+ and Nitro+ SE RX 580 cards. From a mining aspect, the Pulse cards are good for dual mining but run much hotter and don't overclock as well as the Nitro+. I wouldn't recommend getting the Pulse cards if the price difference is $25 or less. No dual Bios switch on the Pulse card either. I have the best results with the Nitro+ non SE RX 580 cards. Both the SE and non SE cards overclock well after a simple Polaris Bios Editor v1.62 'one click timing patch' Bios mod and run cool. The non SE cards are cheaper and I prefer them. The blue RX 580 SE cards also have annoying blue led fans that can't be turned off.
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Due to the manufacturing process, Nvidia Volta should be even more overpiced than Pascal when it comes to performance/cost. https://www.youtube.com/watch?v=Op3h_bV3ohAAMD Navi will retain the Vega architecture with improved power management. Should be a great mining card. |
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Profitability is determined based on when you cash out, not when you mine. Unless you have a large farm, the problem with mining the coins showing the current top profitability on whattomine is it's mostly based on the large price and difficulty fluctuations shit coins have and by the time you accumulate enough coins to cash out, profitability and the difficulty will have changed. A better indicator is the three and seven profitability indicator compared to ETH which is also shown on whattomine. It also dosen't take in to account dual mining profitability.
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I wouldn't use a PCI-E splitter cable for two different GPU's. That's any easy way to overload the connector and rail on your PSU with close to 300+ W in some cases. I only use a PCI-E splitter for a 8-pin and 6-pin on the same GPU, the GPU and riser or for two risers and don't have a problem.
If you don't have enough PCI-E connectors for your GPU's, you should get a larger PSU or use a dual PSU setup.
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No. The 10 minute block time difficulty adjustment is only for you plebs mining this shit coin after the devs fill their bags with everyone's money. LOL.
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