Watch shipping charges - when I looked to preorder one from EVGA, shipping was going to kick the price up HIGHER than I ended up paying Newegg for the SAME CARD.

 Might be different if you preorder more than one at a time.

 Standard TDP for the 1080, and quite a few higher-end 1070s are also 180 watt TDP.
 MSI makes a 1070 with a 240 watt TDP, but that thing is extreme overkill and I've never been able to push mine HARD enough to get to that power level.

I pulled the trigger on ONE because I figure it should at least be comparable on a hash/$ basis vs the 1070/1080/1080ti based on the publishes specs for Equihash mining.

 It it turns out to be a particularly good ETH miner, that's an "unexpected bonus".

 and one HECK of a lot lower memory CLOCK RATE.

 It's not all about the bus width, it's about the width TIMES the clock.

 Why would NVidia put a wider bus on a mid-range card than they put on the 1080ti or the TITAN?
 Expecting 512 bit bus on this card would be STUPID.

 Not enough RAM for the DAG file - it MIGHT work for some of the ETH clones like ETC if you have a 2GB version, but the performance was never very good on ETH as it had way too few cores.
 1GB versions of the card NEVER worked on ETH at all, not enough RAM even for the original DAG file.

 It's about a 250ish hash/s card for Monero with a mild overclock, which is comparable to some mid-range CPUs and uses little if any more power than they do.
 It MIGHT be a viable ZEC miner, never tried it on that to date.

 There is no way to know for 100% sure before it's tried - but there is also no reason to believe that this miner won't work well on the 1070 ti, since there are no major changes in the basic architecture of the GPU that would cause issues.

 Ask again in about a week, when folks that pre-ordered 1070ti start getting their cards and have a chance to put them in machines.

Folks that are making their own mining chips on the 14/16nm node are few.

 Bitfury
 Bitmain
 BW.Com
 Caanan
 EBang

 One "huge farm" I am aware of that decided it was better to "roll their own" than to try to deal with the limits of Bitfury production and Bitfury pricing (nobody else is selling SHA256 chips AT ALL on the current 14/16nm node).

 I am not aware of anyone else on this list.


 I suspect that process variation is more of a problem than the "process isn't designed for high power" - consider that AMD and Nvidia routinely build 200+ watt chips on some of these same process, though they might not be quite as high a utilization percentage as a cryptocoin mining chip they aren't all THAT much lower on their GPUs.
 As the node sizes get smaller, process variation is going to get worse - the closer you get to "one electron = turn on or off", the worse it's going to get unless the industry moves to some method of nanofabrication where it can PLACE single atoms where they are needed.

 (Yes, that CAN be done - IBM did it years ago to create an atomic-scale "IBM logo" - but it's not even close to being anything but a laboratory stunt at this point).

 I'm not talking TDP, I'm talking REAL WORLD power draw of my existing R9 290 and R9 280x cards.

 My "big rig" triple R9 290 pulled over 1000 watts at the wall when it was a pure ETH rig, using a TITANIUM power supply and a low-power Sempron 145/MB/small HD setup - and that was AFTER undervolting it via the use of a BIOS from TheStilt.

 I wouldn't trust 2 x 290 and a 280x on a 1000 watt PS for long-term mining - even a GOOD one like an EVGA G2 1000 or a Seasonic X1000 - marginal at best and high probability of lots of crashes when the GPU power draw spikes happen.
 Keep in mind that TDP and actual power draw from a GPU is NOT a constant steady load - it varies some while mining and it DOES see some significant short-term spikes on draw.


 Typical HD might eat 10-15 watts or so at full draw - typical SSD is more like 5 or a bit less.
 NOT a big savings on power usage, and the HD spends a lot of time in a low-power mode so the real savings is even less.

 GMO claims are wildly optimistic at best when it comes to their timeframe - I have ZERO trust for them at this point and won't even bother looking at their ICO thing.


 Innosilicon had *ONE* issue of "underperform" in their history - which was also the only case where they pre-announced a chip and miner before they had a working prototype in hand.
 I wouldn't worry about their A4+ miner "underperforming" as the word seems to be that their initial claims in THIS case were on the low side a bit.
 They DO have a long-time history of making some of the most RELIABLE, rock solid miners on the market - something Bitmain hasn't been able to manage since at least the S5, and even the S5 wasn't as reliable as anything Innosilicon has built.

 Because the government wants all the money it can get away with grabbing - and sometimes MORE than it is legally owed.

The case should work well - though it's about $100 more than the Thermaltake cases I mentioned, it seems to have more open space and is definitely "prettier".

Putting the 1060 in the middle might work, but be aware you're leaving it NO space to get air into the fans so it has a VERY high probability of overheating.


 I don't play Civ 6, but the other games you play aren't heavy CPU *OR* GPU users, they all run reasonably well on current AMD A10 APUs at lowish settings (the HD version of WoT vs the SD version might be more of a GPU hog though).

 I'm not using 750 watt PSUs in my rigs - I'm using 850, and so far only ONE of them is intended to be a "full riser" rig.

 Limit of connectors CAN be an issue though - which is why one of my risers on the "pure riser" rig is running on a dual-Molex to PCI-E adapter I had as a left-over from one of my older GPU purchases, and why I'm not buying any more Aorus cards (2 x 8-pin is a PAIN when a lot of PS makers put either a 6+2 and a 6-pin or an 8-pin and a 6-pin on their "dual connector" cables).

 Keep in mind I designed that particular rig to run 1080 ti cards, ALL of which have 2 power connections (6+8 for some, 8+8 for the rest) with a minimum of a 250 watt factory default TDP.

 3 cards per 850 is MARGINAL if I was running them at 100% TDP, and NOT ENOUGH if I was running 3 cards at 100% AND the rest of the rig on one PS - only reason I can get away with the 850 is that I'm aiming for more like 200-220 watts per 1080ti, and the PS that runs the MB/CPU/RAM/HD will have a pair of 1080ti and something lesser (1080 1070ti or 1070 depending) as the third card.

 A lot of my rigs are 3-card "no riser" rigs, left over from my Folding days (where you NEED a lot of bandwidth to fully utilise the cards) - those rigs were usually a pair of 1080 at 180 watts each and a 1070 at 150, or a pair of high wattage 1070s (Gigabyte Windforce or G1 models) instead of 1080s, or a single high-wattage 1080 (Gigabyte Windforce) at 200 and a pair of 1070s "pushed" a bit to 160-170 watts - and they ALL had at least a quad-core CPU in them to keep the cards busy so the base system power draw is rather higher than a "pure mining" rig normally draws.
 Those rigs mostly have the CPUs doing BOINC work to earn some Gridcoin, but eventually I'll probably shift them over to Monero mining.
 Folding needs a LOT more CPU work and transfers a lot more data to/from the cards, it's not like Mining where the data transfer is small (except ETH/clones during DAG file loadup) and you can get away with using a 1x PCI-E 1.0 connection with little or no impact on your hashrate.

Back when Gigawatt was still MegaBigPower, they had at least one mining farm in Wenatchee somwhere - but I think their bigger farm(s) were on the other side of the river somewhere.

 The new Gigawatt farm IS on the other side of the river, near the East Wenatchee airport in an adjacent industrial park.

 Only on the ETH algorithm, nothing else is as picky about memory - but it likely will easily beat the 1070 and MIGHT argue or even beat the 1080ti on ETH mining (the 1070 beats the 1080 on ETH due to that GDDR5X).

 It should fall in just a HAIR under the 1080 and easily beat the 1070 on everything else.

 My pair of Aorus GTX 1080ti cards (the BASE Aorus, not the higher-clocked version) pull about 780 sol/s at 250 watts (100% tdp), +100 core +150 mem, after a fair bit of tweek testing the core and memory settings seem to be optimal for it on ZCash.
 They still pulls 720 at 200 watts TDP (80%) and the "efficiency knee" seems to be somewhere in the 150 watt (620 sol) to 175 watt (680 sol) range.
 One is in my game system running Win7, the other in my experimental B250 Mining Pro riser rig running XUbuntu LINUX - but the stats are the same give or take measurement limits.
 Even pushing, I've never gotten an Aorus to go much over 70C on 80% fan even with a 90F ambient - and the one in my gaming machine has never gone over 66C or so since it's in an air-conditioned room at around 80F ambient in a case with good airflow.

 My Gigabyte Windforce GTX 1080ti pulls close to those numbers, but falls down some on the high end as it overheats faster and can't maintain boost as well - and it runs 3-4C hotter unless I pump the fan up to 90% or so.
 Up side, it's only 8+6 for power connection instead of 8+8 for the Aorus.

 Best I've seen out of a 1070 was around 450 ballpark, some folks have claimed a lot higher but they apparently have had a lot better luck on getting their memory to overclock a lot than I have.

PCI-E 1.0 should not be an issue, PCI-E 2.0 and PCI-E 3.0 specs are 100% backward compatable.

I did a lot of my early mining on AMD socket 754 Sempron based motherboards, worked fine - even the pair I eventually upgraded to NVidia 750ti cards (they were in small form factor cases).

3 GPU in a closed rig is viable.

 Given the slot layout on motherboards though, you almost have to use something like the Gigabyte 1070 (or 1060) "ITX" card in the 3'd slot to allow for enough airflow into the middle card, and blower-type cards will probably help a LOT on keeping temps down.

 You HAVE to use a case that is designed for "8 peripheral slots" like the Thermaltake V34 and V35 series, or you get stuck being forced to use a low-end single-slot-width card in that third slot.

 Good air intake is CRITICAL - I strongly reccomend a pair of fairly high flow 120mm or 140mm fans in the front of the case, and try to keep as much stuff away from the airflow path from those fans to the leading edge of your GPUs as possible.
The Thermaltake cases I mention have 2 x removeable HD cages so you can guarentee at least ONE fan worth of unrestricted airflow into the GPU area by removing one of them completely.

I have NEVER seen a computer device designed to run on 220 that needed a neutral.

 BW.COM was the result of a merger between LKETC and a large pool operator the name of which is escaping me at this time.


 The only company Bitmain can be said accurately to have killed would be Spondoolies - the other deaths were pretty much all self-inflicted or the "company" involved was never more than a scam in the first place, and to be FAIR the Spondoolies death was at least PARTLY self-inflicted.

 DT3 is one of the 3 fan models though, as I recall - the SC is 2 fan.
 Still good cooling, just not quite AS good.

 For a case build, the EVGA SC2 cards should have good enough cooling, but a switch to the ASUS "Turbo" blower card would probably run cooler, or even to any of the Founder Edition cards.

 The Zotac mini is long enough to partly block the blower intake of the middle card, AND it's going to be blowing HOT air into that blower intake - NOT recommended for a rig in a case.

 For case builds, I'm fond of the Thermaltake H34/H35 series cases - you DEFINITELY need a case that has "8 peripheral slots" and some SPACE between the end of the motherboard and the PS or edge of the case so that end card can get some AIR into it.

https://www.newegg.com/Product/Product.aspx?Item=9SIA8EF5RY3313&cm_re=thermaltake_h34-_-11-133-270-_-Product

 (edit to fix the "V34/35" misquote and add a link)