Not enough to pay for it's electric usage.

 Odds are good it won't get much if any over 1MH/s - which is worse efficiency than the 2.7MHs (appx) at 90 (appx) watts the old Gridseed 80 Blade FIRST GENERATION Scrypt capable ASIC managed (we're about a month or so out from the Innosilicon A4, which is at LEAST a 3'd and arguably a 4'th generation ASIC for Scrypt).


 We're in the right forum area BTW - thread might have gotten moved before I saw it though.


 RX 480 should be a good Ethereum miner, though it might be a bit too late to achieve ROI on it given how much the diff of Ethereum has been increasing of late and that the price has NOT been keeping up the last couple months.

 Manufacture of Solar and Wind equipment generates a lot of toxic waste too. It's just not continuous like burning Coal or Natural Gas, and it's certainly not the issue that Nuclear Waste is.


 I also suspect that the "public health" and "environment" damage due to coal burning is overstated quite a bit in recent years - EPA has been cracking down hard on emmisions for quite a while now. Coal mining damage is also overstated in recent years, due to "put the mine back the way it was" regulations that have been enacted. Not saying the damage is ZERO, but it's not the nightmare environmentalists have been portraying it as (and probably never WAS quite that bad in this country - the Soviet Union and a lot of the Warsaw Pact on the other hand got really bad in places).

 Too new, folks need to figure out HOW to mod them - and if it's worthwhile to do so.


 RX 480 should be interesting - too bad it didn't show up a couple months sooner, if it turns out to be a good Ethereum performer.

Availability (MAJOR shortages) on both the GTX1080 and now the GTX 1070 are putting a serious limit on how much they are affecting the market so far.
 Might change in the next month or two though.

 DirectX 12 also appears like it might give AMD a major shot in the arm on competative performance for a couple years, as it appears their CURRENT gen cards are competative with Pascal ALREADY.

The RX 480 has been ANNOUNCED, the actual release isn't 'till about 2 weeks from now.
New tech - probably low availability initially, and there WILL be a price premium for a month or two.

 It specs out to crush it's market segment - but most likely it will be a good-efficiency but not super-high hashrate Ethereum miner.

 The 256 bit memory bus is probably going to be a significant limiter on Ethereum, but archetecture upgrades might make up for that or even more so - on the other hand, the Nano/Fury line have HUGE bandwidth yet barely match a 2 generation old R9 290 on Ethereum mining for hashrate (MUCH lower power consumption though).


 The price, if you can actually GET them at $200, is nice - even if the card turns out to be a 20MH/s miner the efficiency and price should make it a good option if AVAILABILITY isn't GTX 1080 level "nope, we're out of stock almost all the time".


 I suspect the A4 will be the ONLY new Scrypt miner for a few years - the only potential competition was the Alcheminer folks, and they appear to have failed on getting their funding going for their intended next-gen design. KNC is of course bankrupt and tended to have very low reliability (both corporate AND miner), SFARDS seems to have disapperered after the initial batch of those massively overpriced dumb SF100 "dual miner" units, which pretty much exausts the folks that have ever made Scrypt chips - and I doubt that the likes of Bitmain or Bitfury are interested in Scrypt.


 I suspect the timing of my move is going to prove pretty good overall, by the time I get moved into the new place there should be OPTIONS to consider.

Just getting an ASIC *CHIP* designed, taped out, tested, and into production is more like a 6 month process on highly mature process nodes (like 40nm, PERHAPS 28nm) and you're looking at millions to get a significant number made all costs totaled.

 Then you get to spend another month or three designing, testing, and getting a miner into production.

0.26 cents/watt electric?

 *ICK*

 I'm amazed you try to mine at ALL at that crazy-high electric cost.

I like lots of standard "box" type fans with an A/C filter on the intake side, positive pressure filtered air is VERY good for dust control - if you can push enough of it.

 Might have to go "industrial" fans at some point though, I'm starting to hit limits on how much air the box fans can push.

There's a USB-based ASIC out there for X11, spacing the maker (Pinoli or something like that?) - it's the only thing close to inexpensive available at this time.

 ASIC for X11 are a NEW development, none of them have been available more than a very few months, so the prices on them are still "new user adoption" inflated.

You're not going to get enough airflow with a little 14" exaust fan.
I'm having enough issues getting adaquate airflow with 5 x 20" box fans on slightly LESS mining heat generation than you're planning to add - inside temps today exceeded 105 degrees (93 or 94 outside) despite the airflow.


 You're probably looking at more than 3 weeks of wait time on the RX 480, unless you get VERY lucky or it's availability is a ton better than the GTX1080 has had to date.

The main issue with solar is the up-front cost of the equipment is NOT competative with coal/natural gas/nuclear (though nuclear gets substantial fuel cost subsidies from the feds) and not even CLOSE to hydro.

 It's a bit better if you go grid-tie, since you can count on the power company to provide when your sun goes away, but STILL not competative.


 Same issue with wind power, which has substantial subsidies but is STILL not competative with "conventional" generation yet - even WITH the subsidies and in a good wind-generation area like Northwest Iowa, Alliant STILL pays more for windpower than any of it's other generation (though it might pay a bit less than the power it has to BUY from outside sources).


 The best deal is to have just enough genration at your array/farm's max output to JUST cover your normal usage, then your "replacement cost" is what you are paying the power company.



 The only places solar and wind actually make sense are remote spots where running a power line in would cost a TON, like some mountaintops and a few really remote empty areas of Alaska/Montana and the like.



 The only real reason Solar and Wind are getting more competative the past decade is that increasing regulations and costs to USE coal have driven the cost of power generation up a LOT - to the point a lot of power companies are switching away from coal to natural gas despite the generators used for natural gas being LESS efficient (most natural-gas power generators are gas turbines, basically the "power core" out of a jet engine in pretty much ALL cases, and are lucky to get much over 45% conversion efficiency - a well designed fairly recent coal plant can excede 60%, and even better if they get to sell off some or all of their excess low-pressure steam - but natual gas burns a lot cleaner for the most part compared to coal, so no or little need for expen$$$$$$$ive "scrubbers" and the like).


 The sad part - we have proven coal reserves for over 200 YEARS at current power usage, if coal provided ALL of the power generation of the US. Natural gas reserves - we have more like 30 years IF THAT under the same conditions, and we're already having to IMPORT a bunch from Canada to cover current usage - though like for oil, recent technology has been helping some on those issues.
 EPA is being very short-sighted on this issue, like so many others.

SHA256 mining is just sleeping for a bit - once the S9 comes down in price to around half, or competition starts DRIVING it down, SHA256 mining should take off again.

 Keep in mind that previous miner generations were short because miners were playing "catchup" with the state of the art in semiconductor tech - the 14/16nm Full Custom generation as exemplified by the S9 and that Bitfury chip of the videos a couple months back should have YEARS of being "the most efficient" or very close, giving a lot more time to achieve ROI on them as long as your electric rate isn't too high.


 Litecoin is due for a major shakeup starting next month or thereabouts, when Innosilicon starts shipping it's new A4 Dominator miners. The last year might look like a bit of a "golden period" of stable pricing, almost stable diff, and good profits even on older gear or at not-cheap electric rates.

Dual core CPU is overkill unless perhaps cases where you have LOTS of cards.
Semperon 145 SINGLE-CORE CPU in my "big box" is handling 3x R9 290s just fine, with 8GB of DDR3 (1333 I think, might be 1066).
If I'd been building that one from scratch, it likely would have gottan at least a quad-core, but it CAME with the Semperon so I'm using it for now (I do have a X2 240 I might swap into there eventually since it'll work in that motherboard).

 I've got one older Semperon 3000 based single-GPU systems with PCI-E 1.0 slots though that seem to get a little lower hashrate out of the R9 280X in it than the same model card gets in dual-card setups on more modern MB/CPU/RAM setups. I suspect the 1 GB of main memory on that 3000-based system might also be having some impact.

 You might want to build the systems out bigger though for the long-term, figuring that eventually Ethereum will become unprofitable, there might or might not be anything else worth mining after that for years, and you can always sell them to gamers/etc if you don't skimp too hard on the CPU and RAM - they're also easier to turn to other usage if they're not handicapped with a small CPU and slow/small RAM setup. That's the logic behind my "swap the X240 into big system" - it's probably going to switch to Folding once Ethereum is no longer profitable, though I might switch it to a KILLER RC5-72 cruncher instead.


 NVidia doesn't do well on Ethereum on a hash/dollar basis - only NVidia cards that can mine it at all under $200 are the GTX 960 (11-12 MH/s), GTX950 (10-11 MH/s) and 2GB versions of the 750TI (3.5ish MH/s) - they're all efficient on a hash/WATT basis but bying them to mine Ethereum is a bad choice.

 Only reasons to go NVidia for Ethereum mining are:
 (1) you already HAVE the card (my GTX 950s fit this catagory)
 (2) you have existing plans to buy NVidia for some other usage it's GOOD at, and just plan to mne to help defray the cost of the new card (My 960s and 750TIs fit here)



 We can't tell you how much power you might or might not save on an RX 480, since the card HAS NOT BEEN RELEASED YET and I've yet to see anyone with a review model that tried it on Ethereum. Ask about that in a couple-three weeks, we MIGHT have some hard info by then rather than just speculating.

 Nanos are nowhere near "about the same specs as an R9 290x" - more shaders, MUCH lower power usage, more RAM, much wider memory and higher memory bandwidth.

 I don't anticipate the RX 480 having a noticeable effect on their pricing - perhaps when an RX 490 comes out THAT might affect Nano pricing noticeably.
 From the specs I've seen to date on the RX 480, it is NOT in the same class as a Nano overall - somewhere between half and 3/4ths of the performance, mostly due to the higher clock rate and despite having about half the cores....

 You need to get airflow INTO / OUT OF the garage, not just around it, or overheat will happen. Fans in windows are a good place to start.

There was a "fix griidseeds" thread around somewhere, either on here or on litecoin talk (I do NOT remember which) that might have applicable info.
 From what I can tell looking with a magnifying glass at one of my blades, they appear to be a ferrite bead - but NO actual value given on them anywhere.

 Try google.

And just exactly what coin it more profitable to mine than Ethereum right now?

 (I am aware of a few that are getting semi-close with the drop in Ethereum profitability due largely to the increase in diff, but NOT aware of any that are MORE profitable).

At this point, Doge is nothing more than a "merge mine it while mining LiteCoin with ASIC gear" coin.\
It's days as a coin worth mining for itself ended quite a while back.


 Bitcoin - I'd wait for either the S9 price to drop a LOT, or competition to show up at a more reasonable price point (which will probably CAUSE the S9 price to drop for competative reasons).
 Don't even think about trying to mine BitCoin with anything but an ASIC, and unless your power is FREE don't bother even looking at anything before the S7/Avalon6/B-Eleven generation units, or long SLOW shot if you get a REAL good deal on an S5 or SP20 generation unit (nothing else is likely to last long enough to achieve ROI even on FREE electric).


 Ethereum - if you have existing hardware that can mine it, do so - if you don't, it's VERY iffy you'll achieve ROI. If you have computer systems with unused PCI-E slots AND enough power, you might be able to achieve ROI if you go with used GPU cards to add to such a system - but it's STILL kinda iffy unless you get a good ETH mining card quite cheap, with the rate that difficulty has been increasing the last couple of months.

Right now, R9 290 or R9 390 - but expect high power consumption for the 30MH ballpark both can manage.

 Skip the X varients - more expensive, don't hash any faster, eat more power - unless you get one HECK of a deal on one.

 R9 280X or R9 380X are fairly good alternatives if you can't find 290/390 cards where you are at.


 End of the month, depending on availability and "early adopter premium" pricing, the RX 480 MIGHT be a good choice - but I'd not count on it 'till more likely late July or sometime in August to get down to the $199 MSRP on sites that actually have them in stock.

You're trying to run them without the heatsinks?

 You're lucky the WHOLE BOARD didn't overheat and blow up.


 I agree with the other reply that you likely have a polarity issue - but if you don't get those board reinstalled on the heatsinks and some sort of fan blowing air through the heatsinks you ARE going to have a "all the hash chips overheating and dying FAST" issue.