Hey Tytanick, I think I found a small bug/potential QOL improvement.

I'm using the beta dashboard (idk if this makes a difference) and I found that in the overclock settings, if I input a new mem clock, and leave the core clock field blank, the OC fails to apply, and I receive a message saying I input a false clock value, and smos actually attributes the change to core, even though I filled out the mem clock field. This is easily worked around by just inputting the core value that the card is already set to into the core field, but feels redundant and un-intuitive.

How large was your garage and how many cards were you running? Those are some pretty good results in FL!

Can anyone confirm ethOS is working properly with 7 cards on a z170 board?

the website does now state "Supports up to 10 AMD RX Series GPUs: Including support for Intel Z170/X/270/X Chipsets and AMD Ryzen"

Was there an update that made this work?

From what I've read on here, people have been able to get the MSI z170a boards to run fine with 7 cards in windows, no? If that is the case, then it must be something else...

Many of us have an electrician add additional circuits if mining at a residence.

Check out @yun9999's shed build here: https://bitcointalk.org/index.php?topic=1806061.0

I don't see any reason to not copy it exactly. I would try to speak with him about it though, I'm sure he has already found ways to improve it.

Those PDU's you posted would work fine. Just be aware of the number of outlets, and amp limit of the PDUs.

As for 240 vs 220 I am not sure, is that european vs american standard?

Either way they are more or less the same, a PSU will be rated like "100v - 240v" and can be plugged into anything in that range.
Although I'll say again, DISCLAIMER, I am no electrician, please verify with a professional.

As for power, you'll want to pick up some 240v PDUs. They are very reasonably priced when bought used.

Ehternet cables can be tied along legs of the rack, and all plugged in to an ethernet switch such as this: https://www.amazon.com/NETGEAR-ProSAFE-Ethernet-Rackmount-JFS524-200NAS/dp/B00DCUKCVW/ref=sr_1_2?s=pc&ie=UTF8&qid=1494430119&sr=1-2&keywords=ethernet+switch&refinements=p_n_feature_keywords_two_browse-bin%3A7306164011

Same here. Have Z170a M5 boards, and I'd love to use smos!

Your panel appears to have plenty of room in it. Those blank gray spaces without switches can handle additional circuits, so you would not need to add another entire panel. The electricians will tell you exactly what they can put in, but I see room for at least 100amps if not more. I think you could fit 4 240v 50A circuits if you move one smaller circuit to the opposite side of the box. Then they can install however many outlets you need. You could do something like 4 50A ciruits, each with its own outlet, and plug a 50A PDU into each outlet. Or twice the outlets/PDUs with PDUs rated at 30A. But again, talk it out with the electricians, I am not qualified for such work so don't follow my advice without asking a real professional!

I also use EVGA PSUs which you can just plug into a 240v PDU. Some PSUs have 120/240v switches on the back (maybe only older models?). But your PSU should say on it somewhere something like "100v - 240v 50hz - 60hz". If it simply says "100v - 120v" you are out of luck. With that many rigs I would highly recommend getting some server PSUs to supply the bulk of the power anyways. Finksy sells entire packages that will make your life way easier. If he is out, pm me for additional sources.

Phil's diagram for airflow would definitely be more efficient than what I suggested. Here is a diagram of my suggestion: http://imgur.com/a/AQW9x

Again, its not ideal in terms of airflow, but it may be more feasible than putting a hole in the back of the garage, and sucking air from the house. Not to mention it will be LOUD with the door to the inside of the house open. Also note that you have to have enough louvers to match the exaust fan, too few and it will be extra loud and wear on the fan motor.

I do not know how much electricity your nvidia rigs need, but assuming you have everything running off 240v circuits and the full 200amps, then you can pull up to 240*200*0.8 = 38,400watts... so divide that by the peak power consumption of one of your rigs measured with a proper wall meter. While that could easily be 30+ rigs, you may run out of space/cooling capacity before electric.

OP, if you take a picture of the inside of your panel, I can check how much room it has to add circuits. If it is full, you may need to add a second box, but it really is not that expensive.

How are you judging that?

It reportedly uses 250w vs a 1070's 150w, but at twice the tflops (I admittedly have no idea what that may or may not mean for mining speed)

It does look like they will be at least somewhat near in price though.

http://www.tweaktown.com/news/57418/amd-radeon-rx-vega-less-20-000-available-launch/index.html

Doesn't look good for us...

Yeah if you're lucky you can find the server racks used for cheap, but I still opt for wire shelves. Home Depot and Wal-Mart sell similar brands for cheap with a 600lb rating per shelf. You could fit ten rigs on this: http://www.homedepot.com/p/HDX-48-in-W-x-72-in-H-x-18-in-D-Decorative-Wire-Chrome-Finish-Commercial-Shelving-Unit-6T60184872C/100655787

For the electric, I would opt to add a 100amp (or two 50amp) circuits into your box at 240v. Or maybe swap some 120v circuits for 240v if the box does not have the room. It will be pretty cheap to have done since your box is in the garage and the electrician won't have to run wires a long distance/through walls. The 240v circuit will help with efficiency/your high-ish electric rate. I'd talk to @Finksy about some platinum server PSUs if you plan to have 5+rigs. Again, it'll help cut the hurt of the $0.14 electric.

As for cooling, I'd personally put the rigs right in front of the door going to the outside. Exhaust fan on the door, you might be able to put a louver in place of the window on the door. Then I'd put louvers along the bottom of the garage door for intakes. Just make sure you have enough to match the power of your exhaust fan. If you do get up to ten rigs, I'd get a fan ~3,000CFM, but that's a serious shot in the dark. idk nvidia rigs, and idk virginia.

#1. You said you had a 200 amp panel, is that a panel dedicate for the rigs, or your whole house? If it's a dedicated panel for rigs, then its simply 200*240*0.8 = 38,400 watts, or half that for 120v.

#2. You are gunna need an intake/outtake. Garage door is the obvious intake, using louvers. There are many examples around the forums. Definitely check out @yun9999's thread. I would turn the door to the outside (i don't see it in the pictures, but I believe you said one exists) into an exhaust. This would be easiest if it is a door you never have to use. You could mount a large fan in the top half of the doorway. What you'll need for fan size will be determined by how many rigs you have, and the ambient temp. Do you live in a hot area or no? That indented area may be fine for the time being. If you scaled enough I may worry that it is not close enough to the exhaust (although, again, i don't see the door, so i'm not sure). With 5 rigs i'm sure its fine.

3. The best racks for looks are definitely 42U server cabinets, but you'll pay up for them for sure. Metal wire shelving units that many miners use are much more cost effective, but are ugly and cable management can be difficult. I've also been told the server cabinets are better for cooling, I can't say from experience, but it would make sense to me.

Phil, feel free to correct me on anything  

Hey OP, what kind of cooling setup do you have for that many GPUs? (240 right?) I saw that yun9999 has two 5000CFM fans in his garage in Texas for about the same size setup (i think). How are you dealing with the Florida heat/humidity? And whats electric like there?

Can the SSR be used with ethOS? I'm considering using ethOS over simplemining OS until I can confirm 7 5xx series cards on a z170 board will work with simpleming OS.

Would an A/C really be that efficient while you are also circulating air in/out of the garage with fans?

Also, has anyone tried anything like this?

http://www.homedepot.com/p/Master-Flow-4500-CFM-24-in-Direct-Drive-Whole-House-Fan-with-Shutter-WHFS24M/100018252

I believe @yun9999 says he has two 5000CFM fans for ~200 GPUs in Texas. So one of these in the ceiling, and some vents in the garage door should be plenty for about up to 100 GPUs just about anywhere, no?

Anyone get 7 running yet? 

I'm interested in anyone's input on this as well. I agree with Phil's math for sure, but what if you were able to extend that model to a year from now? The iBelink definitely seems more profitable, so the question is, given enough time, would it surpass total profit of Phil's zec rig? I'm not sure if anyone can predict that... Seems like a classic higher-risk higher-reward scenario. Very difficult to weigh the two.

Put me down for one.