Vega is a lot MORE risky, as long as it's so dependent on Monero to be hash/$ efficient - Vega LOSES on everything else I've seen figures on for cryptocoin mining on a hash/$ basis.

 I also strongly dislike that you have to run Windows 10 to get the high Monero hashrates, as every Monero miner I've tried on it requires the "blockchain" drivers to GET those rates and either the miner doesn't exist on LINUX, or you run into the issue with the blockchain drivers being BROKEN on Windows 7.

 It does appear that Vega has a better CURRENT time to payback - but BTG is going to shift those numbers when it goes live, and who knows how long the current Monero profitability surge is going to last?
 On the up side - cards should hold their value pretty well partly mitigating the risk, and if you have some OTHER use for them it's certainly worth mining on them 'till the profitability DOES drop - but that's also true for Pascal-based GTX cards which have so many more OPTIONS on what to mine with them.

 Because the blockchain drivers don't work for squat (when they work AT ALL) for a lot of gaming.

 Won't fly with the IRS, I'm 99.99% sure they count cryptocoin miners as "computer equipment" (which they are per most definitions) and require you to use THAT insanely long (even for REAL computers) depreciation timeframe.

Bitmain seems to have averaged selling a new batch of L3+ about once a month for most of a year now (the first 2-3 batches were the L3 though).

 Innosilicon has sold a few batches of the A4 and the first A4+ batch should be shipping early next month.

 No idea how many BW.com L21 units are in use by now.


 Folks will cut back on miner purchases when the profitability drops enough.

Unless you're mining ETH (or possibly the spinoffs like ETC), the "regular" drivers work the same as the "blockchain" drivers.

You have them majorly downclocked and TDP lowered for that setup to work AT ALL on any 1000w power supply.

 They were back up to $459 or $469 when I checked Newegg pricing right before that post - RIGHT NOW there is a Power Color model at $409, a Gigabyte at $429, and the rest are OVER $500.

 On a hash/$ basis, even at $400 they barely match a RX 470/480/570/580 while being less power efficient per every posting I've seen.
 On everything else BUT Monero (and D.Net RC5-72 work) they are VERY poor on a hash/$ basis and usually not competative on hash/watt.

 ETH algo is about the ONLY algo the 1070 ti is "crap" at - far more flexable card than Vega 56 is and efficient at a LOT of algorithms.

Actually, it probably will NOT work.

 7990 was a DUAL GPU card - at ballpark 250 EACH.
 R9 290 pulls 300 watts commonly EACH - but that's with a BIOS update from TheStilt and pushing the card for highest hashrate.

 Even at STOCK TDP the cards ALONE are going to pull close to 1000 watts leaving NOTHING to run the rest of the system on.

 I would not consider anything less than a Seasonic X1250 or EVGA G2 1300 for a rig with those cards in it, and even THOSE power supplies aren't going to have a LOT of headroom for overclocking.

 Running the cards on risers will help a LOT on keeping them .... coolish.

On my Windows rigs, I set a standard "fan curve" on pretty much everything that goes 100% at 80C, 80% at 70C, 60% at 60C, 40% at 50C, and sometimes 20% at 40C.

 On my LINUX rigs, I generally juggle TDP and fan settings to aim for about 70C card temp when the room is in the mid-80F range, which usually ends up with a fan setting at 80% right now.
 I expect that to drop some as I get my current power infrastructure closer to saturation and have to start pushing "efficiency" harder vs "max hashrate", or start building my "new rig" builds for efficiency.

I've not worked at all with the 1060, but I've never seen a 1070 1080 or 1080 ti achieve efficiency above about 4.2 - on the other hand, I've also not done much testing of DSTM yet.
Using EBWF, the 1070 ti was the first card I ever saw get above 4.4 sol/watt.

 Definitely the current efficiency king, just not a night and day difference.

 I don't even expect VOLTA when it shows up to get much past 5.0 for that matter.

CPU mining for ZEC dies months ago when the GPU miners started getting efficient.

 Better off mining a CPU-centric coin instead.

 EVGA GTX 1070 ti SC
 8GB
 +200/+700 in Afterburner
 457 sol/s
 EWBF 3.4
 Windows 7
 60% TDP (106 watts).


 Voskcoin reported 500 sol/s using DSTM with the same settings in a video but I've not had the time to try that myself yet.

Somewhere OTHER THAN Pattia Beach (sp?), which seems to be the main tourist seaside hangout for at least the last 40 years.

 The Holiday Inn was already there and running when I got to visit the place during Westpac '79 on Ranger (about 10 years before Sports Illustrated discovered the place and did one of their swimsuit issue shoots there).

NO.

 You can only run ONE driver version for AMD on a single system.

 Ditto NVidia, ditto Intel, ditto any of the small fry that might still exist.

Mining Bitcoin on ANY computer is a waste of electric - you won't earn enough to cover the cost of electric, and even with FREE electric your computer will die before you earn a significant amount.

 1050 Mhash was the actual spec on the S5, with a +- variation I don't remember offhand.
 940 seems a little low but I think it MIGHT still be in spec.

 Nicehash is a marketplace, not a "pool" as such - short term variation on income is NORMAL there.
 Try watching day vs. day variation, THAT should be fairly close to flat unless Bitcoin makes a major price move.

Iffy - as I recall the fan they normally use is about 2.6 amp draw.
Might be better off using a fan hookup that connects the fan power directly to the power supply and just tach/speed control/ground on the antminer fan connector.

The one true "trick" to mining profiability is to be somewhere with VERY VERY LOW electric cost.

 If your electric cost is close to that of the Big Boys, you WILL be profitable as long as profitable mining exists on a coin.

GPU lack of efficiency vs ASIC does not CHANGE - you still can't even come close to competing.

 1070 ti pulls around 450 sol/s equihash (using EWBF in my testing, 500 using DTMF per Voskcoin's testing video that borrowed my settings) at 106 watts for almost identical price to the Vega 56.
 I ignore them on Monero, as they make a LOT more on ZEC/ZCL/ZEN and such like most NVidia cards do.

 RX 470/480/570/580s routinely pull 26-30 MHash on ETH at HALF THE PRICE of a Vega 56 at current pricing, and the pricing on the 470/570/480/580 should continue to DROP over time as demand keeps easing.

 Vega 56 is pretty much a one-trick pony on Monero at this time for cost and efficient cryptocoin mining, based on the info I've seen.

 Only reason I like mine is that it's not doing "cryptocoin mining" as such, it's doing Distributed.Net RC5-72 work via the Moo Wrapper project on BOINC, and for DNet work the Vega 56 is bloody close to GTX 1080 ti performance for a lot lower cost and similar power draw.


 Also, that $399 price on Vega seems to have been a very short term sale price - it's back up to $460 ballpark again.