I've used Asrock H81 boards without molex. However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different. Thanks for the info! Thanks! Where is the "power check" in the bios? What's is called? Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no? Are you using this board now? Is the "power check" option in the bios something different? Where can I find it specifically? You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.
the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power. if you look at the manual you can read that these molex supply extra power to pci slots I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard. http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+KitUSB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors. |
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Thanks! Where is the "power check" in the bios? What's is called? Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no? Are you using this board now? Is the "power check" option in the bios something different? Where can I find it specifically? You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.
the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power. if you look at the manual you can read that these molex supply extra power to pci slots That's correct. The supplemental power ports are there so you don't burn up the PCI-E slots or motherboard when using unpowered ribbon risers. Theoretically anyways. Many people had problems using unpowered risers with the ASRock H81 Pro BTC. https://forum.ethereum.org/discussion/7367/using-an-asrock-h81-pro-btc-board-beware |
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I think it's in the advanced menu > Chipset configuration. Look for PCI-E power warning or something like that and set it to disabled.
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Code 12 is a PCI-E resource conflict. Change all the x1 PCI-E slots to GEN 1 in the Bios and do a clean install of the drivers after using DDU in safe mode and that should fix it.
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You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.
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The power consumption you can decide with MSI Afterburner at which rate you want it, also the temperature. If you have modified the Bios like you should it should do about 28 Mhash with 90 watt of energy consumed. The problem with Hynix memory is that even if you over clock the memory or core clock of the card with MSI Afterburner it will not have any effect on its actual hashrate. You have done the maximum yourself, now check for a thorough guide of Bios modification in order to reach 28 Mhash at 90 watt. There are some here but I don't remember the links, they are in this very section.
It depends on how the Bios was modded. Just modifying the memory straps to more aggressive timings doesn't change the memory frequency clock, which you need to adust with an overclocking tool. Once the best voltage and clock settings are found, you can program them in the Bios so you don't need to change them manually. Mattthev has a good basic guide on how to do that. https://bitcointalk.org/index.php?topic=1954245.0Just copying the lower frequency timing strap to the higher ones is not the right way to do a good Bios mod. I've had very good results using the PBE v1.6.2 'one click timing patch' which includes bundled performance straps for different types of memory. Most RX 580's also have two sets of memory straps from different brands and PBE will automatically detect and apply the correct performance strap for the memory type. On my Nitro+ RX 580's with Hynix and Samsung dual timings, I get 30+ MH/s using a 1150 MHz core clock, 2100-2200 MHz memory clock, -96 mV undervolt and -15% power limit set in Afterburner. Since AMD changed the API, with the blockchain driver and Crimson driver version 17.7.2 and higher you need to use Afterburner v4.40 beta 16 or higher to be able to set the voltage and fan speed. https://www.guru3d.com/files-details/msi-afterburner-beta-download.html |
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That is wrong. Powered risers use between 40W - 50 W each. This is easy to verify in a dual PSU setup like I have where all the risers are connected to the same PSU as the motherboard and the secondary PSU only powers the tops of the cards.
Ouch, that's a big wattage. So one raiser has a power draws like 1/3 of a 1070. I'm wondering if the draw is so huge why manufacturers make them with sata connectors? I'm sure they know what is the power limit of the sata connector. Or maybe older ones with molex adapter draw that kind of power? What raisers do you use? It's not the risers using the power, it's the GPU drawing 12V through the PCI-E slot. The PCI-E 3.0 specification allows up to 75 W at 12V through the x16 slot. The amount of +12 V and total power they may consume depends on the type of card, some cards pull more from the slot than others. The type of riser makes no difference in how much power the card draws from the riser. I like to use 6-pin risers which have three thicker wires that are designed to spread a higher 12V load compared to 2 for molex and sata connectors. They also use four capacitors instead of three and come with a voltage regulator to prevent spikes. |
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The goal is to keep temperatures at a constant, moderate level (below 75C). It's a good idea to use supplemental fans, like a $20 box fan to keep good air circulation and remove heat around the cards. That makes the card fans work more efficiently, so you don't have to turn them up high. Which prolongs the life of the fans. It's also much cheaper and easier to replace a box fan than multiple card fans. If you have more than 2-3 rigs in a room, you will probably need to look for ways to exhaust the air, so that it's not just circulating the same hot air.  |
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For ZEC, on my RX 580's I get ~325 H/s with a 1350 MHz core clock and 1950 MHz memory clock on Windows 10.
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Mining has always been a way to hedge your rig, which has value outside of mining, to accumulate coins for the cost of your power. Hedging is a way to minimize risk, not maximize your return. Of course you can make more money IF you accumulate more coins that go up in value than you could otherwise do by mining, but that involves risking more capital and it works both ways.
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Lot's of unanswered questions regarding this upcoming BTC fork. The biggest being no mention of a failed ICO that netted the developers a 200,000 BTG premine. https://www.youtube.com/watch?v=MQkCv9pHELoI will continue to dual mine ETH, especially since the profitabilty will go up once the Byzantium fork goes through next week. |
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I just got this board, but i'm kinda confused.
Is it mandatory to power the 2 molex on the MOBO if you use powered risers?
You don't need to use the 4-pin molex PCI-E supplemental power when using all powered USB risers. There is only a small 3.3V draw from the PCI-E slot to the riser through the USB cable. You also DEFINITELY SHOULDN'T connect different power sources to the motherboard, otherwise the motherboard will have to fight the different power sources to stabilize the line. |
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Ebay is perfectly safe to use for selling miners. You can always set your preferences for buyers to "no zero feedback" and "no negative feedback" buyers.
thanks for hint!  Yes, but the problem with that advice is how do you combat the person creates a new account, buys a 99 cent item, and then gets his 1 positive feedback before going on their scamming spree? Ebay changed it a long time ago where sellers are very restricted on who they can exclude. Ebay is perfectly safe until you as a seller finally get screwed over by a scammer. No need to even do that. You can't exclude zero feedback or new accounts with the buyer requirements. Only accounts with a feedback score of -1 or lower, which is impossible if you're only a buyer since sellers can no longer leave negative feedback. |
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sapphire and only sapphire.
For Nvidia EVGA is my go to brand. Too bad they don't deal with AMD GPUs, but perhaps the cards are crap compared to Nvidia so they feel they couldn't stand behind them. More likely they have a bigger margin, since Nvidia is overpriced for performance they have. |
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The motherboard has three ATX 24-pin connectors to directly connect a PSU, one for each bank. No adapters or cables are needed to link the PSU's
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