Gadgetory

okay based on the response to part 1 of this series we could have done a lot better with our first GPU mining computer but believe it or not we knew that theoretically 1080 eyes are the most profitable but we have to ignore cost to buy and so today is all about rectifying our stupidity that is in part 2 of this series which is now we're gonna show you guys how you can mine cryptocurrency at home properly and we're gonna build what we call the ultimate 13 GPU price to performance mining rig kind of started out with that announcer and then it went away and we're gonna do that after we tell you about today's sponsor Mac Weldon believes in smart design premium fabrics and simple shopping use offer code tectus and get 20% off on your next order at the link below part selection might not be thrilling but it's the single most crucial part of building a mining rig now we touched on this a little bit in our last video but one of the key factors in a well-designed miner is what's called the ROI time that is how long it will take the hardware to pay for itself and start generating a profit now our first machine would have taken what five years five five years but a well-designed miner should take closer to four to six months now let's introduce the big star of this video the motherboard most people will just jump on whatever is the cheapest five to seven slot board available at the time but a Seuss's b250 mining expert if you can find it in stock lets us spend a little bit more on the board and the reason that we can afford this is that we can save on system components that don't affect mining speed like CPUs RAM and SSDs because even if we don't fill it up with the P 106 or P 104 Mining cards that are apparently required for it to reach its full 19 GPU potential 13 graphics cards is still about twice as many as a normal board now for our CPU choice so this is gonna be a little different from normal Linus tech tips we're looking for cheep-cheep-cheep so coffee lake is out of the question what Jake's installing here is a last gen kV Lake where we'll find some better options like the Intel Celeron G 39:30 which for around 35 bucks us with the heatsink included is basically steel now as for RAM right now similar to the CPU basically we'd recommend whatever is the cheapest compatible memory that you can find from a reputable brand at the time of filming this ended up being some bare-bones 20 400 megahertz EDR for from crucial for just under 50 bucks okay now we're getting into the tough stuff it's no longer as simple as just buy the cheapest one you can find picking the absolute best GPU for mining would pretty much require a crystal ball but that doesn't mean we can't make some educated guesses so for users who are more limited by space making the most of every PCIe slot by filling their rigs with 1080 T eyes for maximum raw power might make sense but based on the numbers today the ROI time for that approach compared to our choice is much longer so right now one of the best AMD cards and reliability is a factor here - is the rx 574 gig after flashing a mining friendly BIOS and yes we know Vega is insane at Madero mining but it has some other issues so the water-cooled Vegas 64 in our mining test server would regularly switch HPCC off for no apparent reason cutting the hash rate of the card to about the same as a bio slashed rx 580 so it's not worth it to us for the extra cost and hassle at this time even if we could find any of them in stock now on the Nvidia side of things gtx 10 60s and 10 70s yields a similar ROI time to each other but most miners these days are often for the 1060 due to its lower upfront costs and better relative resale value now they have their issues Nvidia cards with sub-optimal Ram yes graphics cards can use memory from different manufacturers and you cannot predict what you'll get in the box drop a lot more performance than AMD cards with bad RAM do but one nice thing about Nvidia cards is that they don't need a BIOS flash in order to hash at their peak so then we ended up with a balanced approach here 8 RX 5 70s which is a total lie because actually one of them's a four seventy three of them are actually five ATS check out these five ATS from that a su sent over this things are ridiculous thanks Bros and then we've got two of what are some pretty special passively cooled P 104 Mining cards that are the equivalent to a gaming GTX 270 about mining cards basically a mining card is a less expensive version of its gaming cousin that comes with beefier power delivery and in some cases claims of better efficiency which believe it or not we were able to observe with these sample cards from Manley so all of that is good stuff the problem though is that they have much shorter warranties and they have no display outputs which can potentially have a negative impact on their resale value if that's part of your model for making back your money okay so it's assembly time these these mining cards actually just go in with with zip ties here because they don't have PC high brackets so it's just a little you know something like that but that is far from our biggest potential problem now actually yeah thank you you guys might have noticed before that the b250 mining expert has PCI Express 1x slots all over the place definitely way too small to fit a full-sized graphics card so what gives Ben well it's designed around the use of risers so these 5 to $10 kits come with they come with a 16 X slot on a little PCB they come with a power adapter and they come with a USB cable that plugs in to see that another little PCB that goes right in to check this out goes right into our 1x slot a little something like that now there are a ton of models of these things on the market but the go-to currently is the V er 0 0 6 C or version 6 C and this was recommended to us by longtime cryptocurrency expert Marshall long that's a gbtc on twitter now one tip when powering these guys is to use as few adapters as possible than plugging them in so ours are run off SATA so we're going to be using two of these adapters per se to harness coming out of our power supply on the subject of power this is one of the biggest concerns for any minor and choosing the right power supplies yes plural potentially for your system can be tricky now for small-scale miners changes in efficiency like going from an 80 plus gold power supply to an 80 plus titanium model probably won't significantly impact your ROI time so most folks go for a relatively inexpensive 800 to 1200 watt unit from a trusted brand leaving some Headroom for more cards if they plan on expanding now one of the best options for a rig like ours would actually be an adapted server power supply that runs 200 volts or more from a company like parallel miner but using one of these relies on having 200 volt power which isn't common in North America and relies on finding anything in stock which was an issue so we opted instead for three 850 ish watt units on most boards you would actually need a jumper like this one to run multiple power supplies but it's pretty cool Asus actually thought of that and the b250 mining expert has three ATX connectors next order of business then is finding a place to put all this stuff so deku over here being the DIY type he's actually whipped up a couple of different styles of frames to show you guys and we're gonna include the dimensions in the video description if you're interested this first one was made out of recycled 2 by 4s that he found at work and some drywall screws that he found at work on the floor so it has the advantage of being really really cheap but it should be noted that we do not recommend having wood anywhere near a hot mining machine and we think the additional cost of this metal frame made from one by one aluminum from the local hardware store is worth the better space efficiency and the lower weight though again you would want to improvise a non wooden support system for your graphics cards for the 13 GPU rig though rather than building a gigantic chassis we opted to demo another popular mounting strategy which is building your minor right into a shelving unit now this isn't great if you have to move it around but it is pretty darn cost-effective because even if you are using racks you're going to want shelves to put them on anyhow okay so everything's together we booted up windows we flashed a few of our GPUs with some customized bios's and we have some mining software ready to go so we're currently using a management utility called awesome miner and without going into too much detail that's probably a subject for another video it basically allows you to control up to 5,000 machines in a single instance and it can Auto profits which notify you if your rigs are having issues help organize your miners into groups and a lot more so with it all set up we're mining Manero with the cast XMR minor on the AMD GPUs and then Z cache with the DS TN minor on the to Nvidia cards and without much tuning the AMD cards are running an average of 7.3 kilo hashes per second and kryptonite and the Nvidia cards are at around one pilla hash per second in equi hash this all equates to a current average of about 900 US dollars per month in revenue before we pay for power so at about 10 US cents per kilowatt-hour this config with current profitability is sitting pretty at about a five-month ROI time that's about a percent of our original rigs estimated ROI time which is pretty damn good so guys stay tuned then for part three of mining adventure where we look at the pros and cons of asic miners because GPUs are not the only way to tackle this speaking of tackling things fresh books is the way that freelancers and small business owners can tackle their accounting problems it's the simple way to be more productive more organized and get paid faster create and send professional-looking invoices in less than 30 seconds set up online payments with just a couple of clicks and get paid up to four days faster see when your client has seen your invoice to put an end to the guessing games and take the whole experience with you on the go with their iOS and Android apps for an unrestricted 30-day free trial just go to FreshBooks comm slash tech tips and enter Linus tech tips in how you heard about us section so thanks for watching guys if this video sucked you know what to do but it was awesome get subscribed hit that like button or check out the link to where to buy the stuff we featured in the video description also linked down there is our merch store which has cool shirts like this one and our community forum which you should totally join