I agree, I believe the sound advice investment wise is its not a good time to start.  I pulled the trigger in mid December to jump in and felt that it was very risky then but was willing to accept the risk and was at a point I was willing to take the loss.  I believed then ethereum would hit 2k by June and the market is doing basically what I thought it would do until then and still believe in it hitting 2k by then.  Any of my friends who are interested in starting mining I warn them not to at this point except for the ones who want to do it more for fun.

What version driver are you using?  I remember once having a similar issue when i was building my first rig.

Good advice.  If you are getting into mining just looking to make a profit its a very difficult time.  That being said that is what everyone said last June, I didn't do it then and kicked myself for it.  I only started in late December with three rigs and about 30% paid back so far but I am HODL'ing all my ether in hopes of big price increases this year as well as diversifying into promising ICOs.  I also went into this with the HOPE of only breaking even and was fine if I lost half my investment.

I was also looking at getting a computer to use for VR so it helped justify that for one of them (or at least to my wife..hehe) and then I can setup a second one for the kids.  All of the GPUs I bought I can sell still for the same or more than I paid for but if it becomes completely unprofitable to mine I may just keep them all for doing some AI modeling now that i have all this compute power!

I did weigh my options of just investing the 10k+ I laid out for this into crypto but liked the idea of hedging my bets a bit and having somewhat of an asset if the market really took a crapper.  I did want to do one more rig but it started to get too difficult to get GPUs as I still have a few on backorder to finish my 3rd rig.

I have one of my rigs running 8 1070s with a 1200w Platinum PSU.  I have the GPUs undervolted and drawing ~100watts each for a total draw from the wall at ~950watts. I try to only use 80% of the rated capacity of the PSU.  I tried to not skimp on anything to do with power and play things safe.

The other thing to look for are the cables that come with the PSU.  I have a SilverStone ST-1200-PT and came with 8 PCIe cables (8 pin to 8(6+2) pin).  Certain 700watt PSUs only have 2 or 3 8pin PCIe ports on the PSU.  So while you might have the wattage you may not have enough ports or cables.  Also do not buy aftermarket cables unless specifically for your PSU, the connector going into the GPU is standard but the connector going into the PSU can vary by manufacturer.

For CPUs I use Pentiums just based on availability at the time but would of went with Celeron.  My preference is SSDs, got mine for ~$30 for 30-60gb ones.  I have a couple test OS builds on USB sticks that I seem to have issues with, but granted these are cheap freebie sticks.

I am running an ASUS Z270-E mobo with 8 1070's with no issues.  Powered with a 1200w platinum PSU.  Only issues I had was initially setting the rig up I started with 2 GPUs and added more as they came in.  I was often having to reset the bios and reboot multiple times to get things working but all is stable now.

Just my limited experience with 3 rigs (6-9 gpus each)  and some friends experiences...the most risers I will power with molex is 3 but if I have enough cables try to limit it to 3.  The SATA cables which i use a molex adapter to the riser I try to limit to 2.  Keep an eye on things and feel the cables to make sure they are not getting hot.

The only components I have ever had an issue with are the risers and USB cables to them.  Which makes sense because none of the risers are coming from name brand manufactures, there has been a shortage of them and hear many stories about bad risers.  Out of my 24 risers only had 2 bad ones and 3 bad USB cables.  A friend of mine had a USB cable start sparking which can be quite scary.

Even when you think you are reordering the same risers you may get completely different ones.  

The 8pin to 2x 6+2pin cables are for powering your cards but I would only power ONE card with each cable.  For 6 1060's a 850w PSU I do not feel is sufficient.  I go by the rule of only planning to draw max 80% of the rated power so thats 680 watts for an 850w PSU.

Your base computer will most likely draw around 130-150w, 1060's draw 120 watts each OOTB (if i remember right). I undervolt mine to 95 watts, some people go lower but my experience with my cards is they were more stable long term at 95w.  That puts you at 720 watts, which isn't bad the problem you come into is the number of PCIe cables.  This was a real pain figuring this all out with my three rigs trying to buy PSUs when there was a big shortage and increases prices.

I was running on Ubuntu for a few months now with all my own scripts for monitoring, OC, etc.  Has been very stable for me but I do not have the time to keep up with updating miners and building out the web interface I started.  I decided this weekend to try out HiveOS and extremely happy with it.  Switched my three rigs over in just a couple hours.

First 24 hours it was crashing often on 2 of my rigs with the same overclock settings I used on my Ubuntu setup but I just backed off the settings a bit and been very stable now for a few days.

I agree on the 1070 ti (or just 1070s).  Mining ethereum I get a stable 31-32 Mh/s drawing only 95-110watts with the 1070s.  Take into account the power consumption of cards and the PSU you will be using when you plan out your rig.  When I tested AMDs they were drawing a lot more power (forgot how much off hand). 

Its a balance of how many cards your motherboard can support, your PSU and what cards you can get.

Great work with this!!  Have had my 3 rigs running on Ubuntu which has been stable but I haven't had the time to finish my remote monitoring framework and keep up with updating claymore, miners, etc.  Switched my rigs over to this and had them all up and running in just a couple hours.

Been running all Nvidia cards and don't have the time to bring AMDs into the mix but going to give it a shot now with some cards a friend is giving me.  Thank you so much!