More or less a tossup, but Genoil miner doesn't charge a fee.

Just check your transaction history for the address of the person that sent you "seed coin".

 9-)

 And it's not melting down?

 8-P


 I'm actually assuming that was a typo and it's eating 330 watts, which would be in line with my R9 290 cards mining ETH.


 At CURRENT pricing, the GTX 1080ti is the overall best card for ZEC - but if 1070 and 1080 pricing drops back to where those cards were at 2 months ago, it becomes a "more or less tossup AT THE RIG level" competition again.

 Before the recent "shortage price gouging", all 3 of them were capable of achieving better than 1 sol/s per $ (NOT counting the underlying MB/RAM/CPU/etc) and fairly close to that counting the entire system with careful shopping for a low-cost system.

 At current pricing, the RX series has VERY POOR performance/cost ratio - they were very good 3 months back before the shortages drove the pricing up though.

A Good 750 watt PS is plenty for a pair of GTX 1080 ti - most of them are only 250 watt TDP, though I suspect a few of the "high end" ones might be 300 or a bit more.

 Oddly enough, my Aorus has 2 x 8 pin connectors but only has a stock TDP of 250 watts - PLENTY of headroom there.

 Rig also has one of the lower-end 3-fan Gigabyte 1080ti cards, and eats 570 peak watts AT THE WALL with a mild overclock and no TDP adjustment on both cards.

 I've not had the time to play with it much, though - and it's not running ZEC at the moment anyway, I'm doing something else with it that pushes it harder (more like ETH) for testing purposes.

Wait for the consumer Vega cards, rumored to be due out late this month or sometime next month.

 The Frontier Edition is priced high due to it's workstation orientation, the consumer cards should be more like half the price (depending on the specific model, apparently they are going to be a LINE this time around instead of only being 1 GPU with a "lose one compute unit from manufacturing defects and sell it as a lower-end model" and "make a shortie card version" routine).

 I won't be shocked if the Vega can beat the 1080ti on ZEC mining, that would be in line with Fury hashrates and clock speed upgrades.
 I WOULD be shocked if the high-end consumer card Vega can't at least get very close.

GTX 960 is good for about a dollar a day on Nicehash most of the last couple weeks - not bad for that old of a midrange card and my pair are long since paid for....

 NVidia and AMD probably figure that if they sell ANY of the mining-specific cards, the "crash" won't impact their sale of NEW cards as hard because very few of the mining-specific cards will find buyers as used cards.

 They increase production of the regular "gaming cards" now, they're going to have a hard time selling ANYTHING in a few months or a year or whenever the crash happens - AMD got hammered by that for a good year or so after the Litecoin craze/crash.


 The issue LAST year when the Polaris and GTX 10xx cards were still new was "production ramp up" limits, NOT the same thing at all.



 It does look like the pressure is starting to ease though, GTX 1070 availability is increasing and prices have started dropping back down towards "2 months back" pricing on at least SOME models.

 Not sure how much of that is shipments of the "mining specific" cards and how much is "profitability is crashing quite a bit the last 2 weeks" though.

 Not on NewEgg you didn't, unless it was a refurb on sale.

 Let's stick to apples and apples comparisons here.

 Also, if you're going with the "lowest" figure, a lot of 1070 cards were on sale at various times on NewEgg at $379 (thus the "give or take $30" part of my comment) - though WHICH ones in any given week varied.

 The cards actually at $410 or so would have been mid-range to higher-end cards, like the EVGA FTW models or the Gigabyte Gaming models, as opposed to the lower-end stuff like the EVGA "SC" and Gigabyte "G1" and "ITX" models.

 "Under 70% TDP" is a meaningless figure when the actual TDP varies so much on different cards.

 A card with a 300 watt TDP will be at 210 watts, while a card with a 250 watt TDP would be using only 200 watts at a 80% TDP, for example.

 Only if they show up in fairly large quantities. 10k a month won't have a noticeable effect, 100k should have SOME effect, 300k a month WILL push pricing back down towards normal.

 You have to go with risers to run more than 4 cards on one motherboard.

 Performance FOR MINING is not noticeably affected, as mining is a low-bandwidth application.

 Such a rig can be a LITTLE more efficient on a per-card basis as you're only using one CPU, one set of RAM, one HD/SSD/USB stick.

 Such a rig tends to be noticeably harder to get set up, get working well, get overclock undervolt etc set for each card to optimise it.

 Stability seems to be somewhat worse, and risers themselves sometimes cause issues.

 Cost on a "per GPU" basis will tend to be a HAIR lower - you pay for the risers and need additional power connectors to power the risers, but you save on MB/RAM/CPU and such SOMETIMES depending on the MB.

 Good cooling will tend to be easier to set up, as the cards can be spaced out more.



 There are applications where using a 1x PCI-E connection to a GPU is a noticeable to major performance bottleneck, but mining isn't one of those.

 (It's a very minor issue on ETH/ETC/offshoots when you first start up a rig, and once every few days when a new DAG epoch is entered, but even THERE it's not a significant issue - you lose some seconds 'cause the DAG takes longer to load but after that it's no issue at all).

 Most were around $410 give or take $30, with the "water cooled" cards closer to $500.

 That's NewEgg pricing, BTW - I gave up on eBay a long time ago when they started pushing Paypal as their primary payment method.

There are already cases around that have provision for 2 power supplies.

They tend to be VERY large and expen$ive though.

 Between the Bonneville Power Authority and the Tennessee Valley Authority, the Feds are already TOO INVOLVED in power generation and sales.

 (along with smaller government-run power generation groups).

 At least the local COUNTY-level PUDs are responsive to their local customers....

I name my mining machines based on the primary GPU cards in them, as most of them are built on 1 of 2 MB/CPU/RAM/PS platforms (HDs vary a bit more).

 2x1080x1, 3x1070x3, and such.

 I might be changing that though, as I get my current infrastructure built up, to a "location-based" scheme, like R1S1 (Row 1 Shelf 1) - but haven't decided yet for sure.



 7 of 9 (Jeri Ryan?) was seriously topheavy for my preference, Denise Crosby (forget her char name) IMO was much nicer built.

 9-)

If it's the same GPU and same memory, no issue at all but you have to be more careful when setting overclocks, modding memory, and watching temps to be sure you're on the RIGHT card.

 Mixing GPU models can be a bit of an issue, but normally works if it's in the same generation with only a small stability hit - just have to be careful when setting overclocks etc.

 Mixing generations will be a noticeable stability hit but will still work as long as you can use one driver to support all of the cards.
 This is a LOT more of an issue with AMD, as they don't write drivers any more to support their old Terrascale cards and they don't seem to TEST their current drivers much if at all on R9 3xx series and older GCN cards.

 Mixing manufacturers = major stability hit but CAN work, much easier to get working under Windows though (one of the VERY few things Windows does a lot better than LINUX).

All the same GPU and the same RAM speed, should be zero issues as long as you mind the temps on each and BIOS mod them one at a time.

R9 270 was only a 10 Mh/s card (give or take a bit) for the last couple of months it COULD mine ETH (I have 2 of the HD 7870, same card except for minor BIOS changes and slightly slower RAM).

 It might still be able to mine ETC and other coin using the same algo as ETH, *IF* the DAG file size is less than the RAM on the card (I don't think the R9 270 ever had a version with more than 2GB).

 I would call it a 160-170 sol/s card on ZEC, but might manage a bit more if you can push yours harder than I could push my HD 7870 cards.

ETH and ETC use the same algo, so the same miners work on both - you decide which you are doing based on what pool you point the miner at.

   ******************BUT********************

 You can't mine ETH at all on a card with less than 3GB RAM and I think you can't mine ETC on a card with less than 2GB (not sure if they're up to >2GB limit yet), as the DAG files are too large to fit in cards with less RAM.



 R9 270 is the same as my HD 7870 except for slightly faster RAM (not a major factor on ZEC) and an updated BIOS - 165 seems reasonable for a medium-to-high overclock on that card as it's right about where I remember my HD7870s managing.

 The pool estimates your hashrate based on the shares your miner finds - variation like you are seeing is NORMAL and nothing to worry about.

 The "orange" line is a long-term average, it can take 24 hours for it to achieve a stable value.


 20 Mh/s is a LITTLE low for a RX 480, but for the 4GB RAM version with no BIOD mod it's not completely out of line depending on how much you can overclock the RAM.

 The "stales" count is a bit on the high side, you might have some lag issues with your internet connection somewhere between your rig and ethermine.org.