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    Friday, July 16, 2021

    GPU Mining Automation, auto switching between ETH, XTZ and XMR without restarting miner

    GPU Mining Automation, auto switching between ETH, XTZ and XMR without restarting miner


    Automation, auto switching between ETH, XTZ and XMR without restarting miner

    Posted: 16 Jul 2021 07:03 AM PDT

    US BTC Miners - What pool do you use and why?

    Posted: 15 Jul 2021 09:50 PM PDT

    I'm curious given the recent crackdown in China what's been working over here. Thanks in advance!

    submitted by /u/HippyDave
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    Do manufacturers still sell 30 series cards without LHR?

    Posted: 15 Jul 2021 09:19 AM PDT

    I want to build a second gaming/mining rig for myself and I wanted to buy an RTX 3070 brand new (I don't mind waiting nor watching websites like a hawk with Discord notifiers). Problem is, because the new 30 series cards I heard have a hash rate limiter, this puts me off buying the card for mining as I could buy a 2060S for the same price with better mining performance for worse gaming performance (gaming performance isn't that much of an issue).

    But I would like to make the most of my money spent, so are there any 3070 GPUs still being sold brand new without a hash rate limiter in the UK?

    submitted by /u/stop-the-cap-
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    im doing a college paper about crypto mining and could use some help obtaining information.

    Posted: 15 Jul 2021 10:36 AM PDT

    hi, first of all, this is not a "how do i mine crypto guys???" post(albeit it does sound like one). i have no interest in investment or anything else regarding any cryptocurrency, and my goal here is to get some specific information regarding crypto mining.

    first i should explain what this paper is actually about: its a investment analisys about a specific topic(and i chose crypto mining as that topic) for my economics class.

    what im seeking here is not necessarily the numbers, tax rates and other "technical" info, but rather where can i find this information(since i have almost zero knowledge about the practicals of crypto mining).

    several specific question i have:

    1 - where can i find a good source of info for energy and equipment costs related to mining

    2 - are there any monetary costs beyond obtaining/maintaining equipment and power consumption?(IE: virtual wallet tax, government agencies or other organizations taxing earnings, etc. )

    3 - where can i find good and trustworthy sources for value growth predictions regarding different cryptcurrencies?

    4 - do different cryptocurrencies or mining methods alter the energy consumption OR taxation/additional costs?

    sorry for the possibly poor english(its not my first language), and thanks in advance for any helpfull replies.

    i did not knew if this was the right subreddit for these kinds of question. if it isnt, please tell me where is the proper place to inquire about this particular subject.

    submitted by /u/joqagamer
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    EVGA 3080 Hybrid Odd/Low Voltages and High Power Usage

    Posted: 15 Jul 2021 09:44 AM PDT

    I have an EVGA RTX 3080 XC3 ULTRA HYBRID that I was working on setting up for mining, and during my testing I noticed a bunch of odd values compared to all my other 3080 cards (this is my first hybrid).

    Here's a screenshot from GPU-Z:

    https://imgur.com/a/pVVC4r6

    As you can see, the PCIe slot voltage, and even the 8-Pin #1 and #2 voltages show around 8.4-8.6v, in comparison to all my other cards which normally show an average of 12v (which from my understanding should be the standard).

    Does anybody have any ideas of why or what could be causing this? I tested a 1660 Super on the same PSU and it reads 12v no problem (all my other 3080s are busy mining).

    I've also noticed that it's very hard for me to get the power usage down below 300w at all without losing major hash rate (dropping to 70% it goes from ~97 MH/s to around ~60 MH/s). All my other cards i'm able to get down to around 220-230 without major hashrate loss.

    Just for reference as well, when trying to run this card using minerstat OS, it seems to max out around ~40-50 MH/s even at full power, I can only get 90 MH/s+ when running on Windows

    Being a computer geek and software dev by trade normally I can figure this out fairly easy, this is the first time i've really been stumped and hoping someone can provide some insight or tips? Thanks!!

    submitted by /u/tripflex
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    Is CPU wattage something to look out for in a GPU mining rig?

    Posted: 14 Jul 2021 09:05 AM PDT

    RTX 3090 FE thermal pads and paste replaced + lessons learned + results

    Posted: 13 Jul 2021 01:44 PM PDT

    RTX 3090 FE thermal pads and paste replaced + lessons learned + results

    NZXT H510, RTX 3090 Founder's Edition, Intel i9 10900K, Gigabyte z590 Aorus Elite, G.Skill Trident Z Royal 3600mhz, EVGA Supernova 850w G5 Gold

    Got a pre built computer from NZXT that has an RTX 3090 Founders Edition. The main purpose of the computer is for gaming but with etherium mining being hot, i figured I would mine some etherium when i'm not gaming. I maybe play once a week at best so it's mostly just a mining computer for now.

    Soon as I started mining, i realized the memory junction temps were through the roof at 110 degrees celcius! There is no way I wanted to let it mine with those temps, so I ordered the Odyssey 1.5mm thermal pads to try the thermal pad mod. I was hesitant on opening up the card but with so many people having success, I figured, how hard can it be? lol.

    After a few hours, I had thermal pads replaced along with new thermal paste (Thermalright TF8) for the GPU. Fired it up and my memory temps were stable around 98-100c. The gpu core was at 65-67 degrees and my mining rate was around 118 MH/s. I thought that was pretty good but my gpu temps went up. I wasn't too happy about that. I waited 2 weeks thinking that that paste may need to cure a bit and might improve but it never did.

    I took the card out and opened it back up again to re-apply thermal paste again. This time I ordered Thermalright TFX. When I took the PCB out to reveal the thermal paste, I realized it didn't squeeze out at all like the factory paste when I first opened the card. When i had applied the TF8, I had spread it on like I had previously done on CPUs. Big mistake. Apparently the pressure on the GPU isn't as high as coolers on CPUs even with the screws tightened all the way. This time, I applied a lot more thermal paste using the X method. Put the card back together and the GPU temps were in the 55-57 range. Thats a 10 degree improvement!

    Unfortunately I made a dumb mistake when putting everything back together. I firmly pressed on the card cover plate to make sure "everything was tight". That caused the plate to flex a little. This flexing indented the thermal pads and since the pads don't inflate again after being pressed, it must have left a gap between the plate and the thermal pads. My memory temps were back to 110.

    I ordered pads again, this time I got the Gelid 1.5mm Ultimate pads because they had a slightly better thermal conductivity rating than the Thermalright Odyssey pads. Took the card apart for the 3rd time and noticed the thermal compound just barely squeezed out from all sides similar to the factory paste. That was a great sign, since I must have applied just the right amount of paste. I put the new pads in place and fired up the card again. I made sure to not press on the memory pads at all! I simply screwed everything nice and tight without pressing down on anything. Memory temps were in the 94c range while the GPU was still a cool 55-57 degrees. Success!

    One more thing to mention, when applying thermal pads, make sure they're not oversized, specially near the edge where the cover edge sits. If the edge of the cover sits on some extra thermal pad, it won't apply proper pressure on the thermal pads that are over the important areas. I've included pics of how much thermal paste I put on the GPU along with the thermal pad layout on both sides.

    I also read somewhere that you shouldn't cover the resistors (R005) with thermal pads so i avoided them when applying the pads. Not sure the reasoning behind this but I figured its not something that gets unnecessarily hot so I made sure to avoid them. So far everything is working as expected.

    Thermal Paste: Thermalright TFX on the GPU (X application method)

    Thermal Pads: Gelid Ultimate 1.5mm

    Memory Overclock: +1100mhz

    GPU Overclock/Underclock: 0mhz (Underclocking made zero difference on power draw but caused instability with cuda core occasionally crashing)

    Power: 83%

    Memory Junction Temps: 96c

    Power Draw: 290 watts

    Efficiency: 415 KH/w

    Fan Speed: Target 62c GPU core (Results in 50-55% fan speeds which keeps things silent!)

    Mining Rate: 120.5 MH/s

    I recommend starting with a +1000mhz clock on the memory and bumping it up 50mhz a day if you're not crashing. I saw some minor instability when going over 1100 so I stopped there. You might max out at +1,000 or get lucky and reach +1,300 without crashing. Keep an eye on your MH/s to see if you're actually getting a difference in your mining rate with each bump in memory clock. The mining rate delta is very small with each 50mhz increase. For example, at +1,000 memory clock, my mining rate is 119.1 MH/s which is only 1.4 MH/s lower than at a memory overclock of +1,100. In the end, stick with the clock speed that provides you with the most stability. This isn't a sprint, its a marathon.

    I set all my overclock settings (fan, power, memory, gpu, etc.) in the t-rex config file just to keep everything in one place. This also basically sets the clock settings only when the miner is running so I can just turn the miner off and game with the factory clock settings. Targeting a GPU temp of 62c keeps my fan speeds at about 52%. I think this is great considering I have an nzxt h510 case which isn't the most airflow friendly case. The computer is in my bedroom and is dead silent. Its rock solid with no GPU crashes or reboots for days.

    TLDR;

    - Use more thermal paste than you think you need and don't spread it!

    - Don't press on the thermal pads when you lay them on the memory chips

    - Don't press on the cover when you're putting the card back together. You don't want to indent the thermal pads more than what the screws are doing already.

    - Don't underclock the GPU core, its useless when mining etherium and can cause instability.

    - Don't oversize the thermal pads.

    RTX 3090 FE with Gelid 1.5mm Ultimate thermal pads and Thermalright TFX paste (GPU side)

    RTX 3090 FE with Gelid 1.5mm Ultimate thermal pads (back side)

    https://preview.redd.it/sqdy0yabl1b71.png?width=803&format=png&auto=webp&s=11285398c650d8af962d729697be7dce859ce955

    submitted by /u/hyeteck
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    Do you have to replace gpu thermal paste every time you open the card.

    Posted: 13 Jul 2021 10:58 PM PDT

    Pretty much title. If I put the wrong size thermal pad and I open it again to replace it do I have to redo the thermal pad every time I open it?

    submitted by /u/catsrcuteilikethem
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