Is it worth right now if i buy a mining machine ?

yeah $550 is my max for a 1070 or 107ti , $350 max for an RX 580 8GB

until prices drop to those levels ill just hold my coins and wait for the next pump

@philipma1957

Hi legend, I need your help / advise.

I have 1 asic miner running and 2 more coming next month.

My PC is now running as a server for the miner. But when 2 more miners arrive I will relocate these miners to a new location. Thus I need a new PC as server for the mining operation.

My idea is to purchase a windows 10 rig (desktop computer) with GPUs so that I can mine ETH at the same time. Can you recommend me the HW configuration, if my budget is about USD$1000 to USD$1100?

Or even better, If you have a old rig that you want to get rid of, would you sell to me please?

Thanks in advance.

Regards,
Steve

Stupid question, In both your previous post, your calculation did target 5400Watts almost and why is that so?

I know with a 30A is derated 24A to avoid overloading the socket, hence why people opt for the 240V to create room for the maximum amount of rigs or GPU's. Please kindly clarify any information I might have misunderstood.

So are you implying that I can't use all the available wattage on the 24A PDU, because on a 30A circuit the 24A PDU is derated already to give room for the 80% max load on the circuit. I may be wrong 100%, I'm just trying to learn about as much as a can when it comes to Mining and its best electrical practices.

On a side note, I found a similar PDU with 6 C19 outlet, where each bank of 2 outlet can support up to 13A. Here's the link for the PDU

https://www.ebay.com/p/HP-Power-Distribution-Unit-Module-24a-Intelligent-Modular-PDU-Contr-572203-001/10011378865?iid=272816280678&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D47301%26meid%3D70b29b8d2f644b6f85250c29274cfaff%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D192343684408%26itm%3D272816280678&_trksid=p2047675.c100005.m1851

My hopes is to find a way to use almost all the wattage I  an get from the 24A 240V and if that would mean going for a PDU that's 30A 240V but derated to 24A as long as let's me use 23.8A, that would be totally cool. I don't have more that one of that 30A 240V in my apartment, so I'll definitely like to leave as less on the table for waste out of the 24A that's the safety limits.

My PSU's are EVGA, I read in your fifth thread that they'll take either 120 or 240. Also, trying to work out how i can fit the HP or Dell Server PSU in a 4u case rather than standard ATX PSU, suggestions are welcome and needed.  

What bracelets?

The card comes with a metal bracket, which you screw on to the frame. And you have one screw hole left on the right side.

You seem to have a free PCI-E slot on the right, but you need to check if your motherboard enables it when all others are used. If it does then a simple pcie  riser would do. Else you would need a multi-port riser.

Consumer PSUs are not meant (not made for) to be run at 70-100% capacity 24/7. That said it doesn't mean they won't. I try not to do that. For example, for my 900 watt systems I generally use 2x 750 watt power supplies.

Also, at 90% capacity you will use more electricity as they start to lose efficiency when you pass 50-70% <- I admit I don't know the exact number.

I highly recommend you (and everyone) install a smoke detector close to their rigs just in case anything goes wrong.

I really appreciate your feedback and guidance always. So I see you talked about the 1080ti's, did you just use them as a reference for capacity to wattage calculation. Though, I know most, if not all of your GPU rigs are now 1080ti waterblock. You run a bigger farm and have been doing this for years.Right now, I'm interested in the best Sol to Wattage ratio and also maximizing my budget. I have only been doing this for 8 months now and everything is paid for with savings so far, so I want to be careful.

With 20 1080ti at 200 watt TDP, that's running at 100% and total 4000watt and 500watt overhead for Mobo, CPU, Risers and other components in a rig, like you said 4500watt which still give me room for another rig that's about 1100watt in total, assuming my calculation is right.

24A x 240V = 5760.

Tried to pick up the Ebay linked products but the actual PDU was gone but search and found the same model, with the extension bar that's still below $100 without considering shipping or Tax. But, I don't think I would be needing an extension, why did you recommend that?

Thank you so much for taking time to respond, very well appreciated.

I asked for this to be moved to alt coins

I know this has been asked and trust me I've googled. Most things I've scene googling are sold. I'm looking if someone could point me directly to something in stock that will power the S9 on a standard U.S outlet safely under $400

I've scene the EVGA 1600W PSU but they are $450 and people have had problems.

I've scene a couple kits that use 2 server PSU's but would prefer to stick to 1.

I see a lot of server psu's on ebay that claim to run but I'm not technically knowledge enough to know what the cheap and scam ones are. They all claim high efficiency.

No problem Sir..., take your time, appreciate the quick feedback already, I just don't want to take any risk with the basic PDU 9560 because I'll have no way of monitoring my usage in wattage.

And since I'm expanding my operations gradually, smaller home farm going in my former office. I'm still sticking with the 4U case and will be sticking them into the 42U, hopefully I can mount at least 8 4U case in there. All 4U case are fitted with 7 GPU's; the scarcity in GPU's have slowed me down as I'm not going to pay over MSRP for them.

Got all my Ethash Algo build done already with RX570s now trying to pick up a lot of Nvidia cards. For Veteran miners, will anyone of you support 8 1060 4U case build over 7 1070's in the same build. I do understand that with the 1070, they are bulkier and the Rosewill L4500 4U case might not fit 7 of those.

To add, I also like to keep about 3/4 to 1/2 inch space between each GPU in the case to allow room for better air circulation, coupled with the 3700rpm 153cfm Delta fans upfront for intake and 1500rpm 82cfm AeroCool Sharkfin fans right behind the GPUs to help exhaust the all the way back, where I left the 2 80mm fans to help exhaust stale hot air that might hover around the CPU.

Any advice with this setup would be appreciate as I'm not familiar with Nvidia cards but being learning a lot from all Philipma's thread. I'm scared I might not be able to fit up to 20 1070's or more on one 30A breaker, which should be 5760 Watts. Hence why I'm looking at the 1060's as because my goal is to get the best Sols/Wattage per rig.

I would like to get some advice from experienced mining farm owners on this. I recently came into possession of 3 PDU's that came with a used 42u server rack I bought from a data center. The models are APC7898 and APC9560, the 7898 is rated for 208V, 35A/~ input and output is 208V and up to 60A, 20A per bank and it's metered and monitored but with a Hubbell CS8365C plug that's rated for 50A.

Is there anyway this is useful for me? I have a 240V 30A electric setup. Also, with the 9560, which is a basic 1U rackmount PDU, that's rated for 120V 24A, I tested with the 240V, it works and was providing 240V, confirmed with my Kill-A-Watt P4400.01 as shown on Philipma1957 on one if his Youtube video. With the APC9560, I would like it metered and so I can monitor is always since it's not rated for 240V originally which is a great risk to take.

I would appreciate any feedback on this and if anyone can share a link to good metered PDU that's not expensive and rack-mountable, will be appreciated. Been stalking Ebay for one for days now and nothing so far.

I've been trying to compare miners and pools using two GTX 1080 cards in separate computers that I've adjusted clock rates/power limits in MSI AB so that any given miner will hash at the same rate on either machine. I assumed that I would get reasonably valid results by having the two competing miners run at a fixed share difficulty for 24 hours to separate addresses on the same pool then reporting the total payout for that time period, but 3 separate people have said that payout is not a reliable metric and that I should be counting the number of shares or even the average hashrate reported by the pool instead, but I honestly can't see how either of those metrics would be any better than payout. I should note that I am not looking to validate my position here, rather, I really want to know why it is wrong (if it is)!

So how do you veteran miners evaluate which miner delivers better performance?

EDIT - well, no thanks to you slackers I think I figured it out (I hope!); hashrate reported by the pool may, indeed, be suspect, but it should be equally suspect regardless of the miner. Conversely, there will always be variability in the time to find a share even at a fixed difficulty and since payout is a direct function of share count * difficulty it will also have some variation based on luck, as well as the hashrate.

So, carry on!

So what's the problem?

Set your config to something like this and start mining:

ccminer-x64.exe -a lyra2v2 -o stratum+tcp://lyra2v2.mine.zpool.ca:4533 -u [address] -p c=XVG

Am I understanding something wrong in my GPU settings?

Why is a single card drawing 60A of current is that correct? That's more than my entire house uses.

Florida, we currently cant sell back to the grid... so anything excess would just be free energy to the grid to use... unfortunately.. i am not planning on using a lot of batteries, just some to even out the dips in electricity during the day.. the goal is to only mine when the sun is out to power the solar panels basically