Topic: Fair Price for a Spondoolies SP20 Jackson? (Read 1752 times)

SP20 should be counted as a 1.3-1.4TH miner, not a 1.7 - it's bloody RARE for one to achieve 1.7 unless you have VERY cold air to feed it.

 Outside of that, it IS overall a much better miner than the S5:

 Far more configurable, with built-in undervolting will be profitable at quite a bit higher network diff than the S5 can achieve without the use of rather pricy "special" adjustable power supplies that don't tend to be as efficient as common ATX "80Plus Gold" supplies.
 Can be pushed for somewhat higher hash rate abet at the cost of a bit worse efficiency than an S5.
 Much better temperature monitoring.


 I find the "auto-tune" stuff to be a minus, but some folks prefer it.
 Stick shift vs. automatic I guess.

Only thing is you will never find a SP20 that can do the 1.7T.  That number was to high they never should have advertised it.   So never count on that with SP20 but I would agree sp 20 holds a higher price then S5 in most cases.

It's ability to underclock is very good.  So I predict it remains higher price then S5.  The SP20 has versatility just like Avalon 4.1's.  Which being able to crank it up or down so much is a great feature to have.

The price IS good. I think people tend to compare it to the MtGox bubble, not understanding that the value was artificially inflated by displaying fake transactions. As such overall, this is a great time to mine, where i live, the cost of running a S5 is about 20%~26% of its revenue.

As such, SP20 at 300$ if it can be run at full speed would be a GREAT deal, without doubt. The difficulty does not seem to be jumping high and the price is slowly trickling up. The SP20 has also great volt control, so its possible to gain greater efficiency fairly easily, prolonging its lifetime.

With your current pricing in mind I don't think your purchasing  will change in the near future.  I don't see miners fitting in your ROI very often with current prices on rigs.

I think we have greatly different way's to obtain what value of miners.   I like market vs should be priced.  If it was should be I would have a bunch more S7's.  But they did not meet my ROI for largscale so I did not go crazy.

So I guess we look at most of it different but have a little common ground.

 As it happens, I haven't bought any miners for a while - as I see ZERO chance of anything current achieving RoI before the halfing and pretty much NOTHING current except perhaps the S7 for a short while will be profitable at all after tha halfing, per my current projections.

 If actual pricing is higher than I am willing to pay to achieve a REASONABLE CHANCE OF ROI, that just means most of the market isn't doing projections of RoI based on what I class as reasonable projections, or possibly some folks have a TON better electric rates than I have - or the most likely cause, inertia leading to failure to adjust pricing to what is really fair by current standards.


 There is nothing new about "market pricing" being higher than reasonable. or price adjustments being slow to respond to external changes, or a market going with "optimism for the future" instead of paying attention to current conditions.
 Try watching the Dow Jones over the last 5 years - crazy high levels of stock price increases while the economy as a whole is barely recovering from the Great Recession and most corporations are NOT actually doing all that much better overall.


 Mining right now is lower profit than it pretty much has ever been, BTC pricing has been edging up lately but NOT enough to match recent difficulty increases - and the only reason diff increases haven't been higher for the last month I suspect to be the shipping delays BitMain has been having on the already-sold S7s.



 Your opinion may vary. Do not fold, spindle, or mutilate. etc.

I think he means low difficulty jumps.  It has been much lower then a lot of us thought it would be on difficulty changes.

For those who are profitable at 230..... 270 is great for us.  So many miners are having a good time.  But I agree it is sellers market.   I want to repeat I have noting against QuintLeo, after looking at some posts I'm afraid it might take that since posts  don't have a tone to them like a talking conversation does.

I just found his should buy price, to be lower then actual market price.   And I realize that is my opinion.

Low difficulty, high price? Are you smoking something?

Price is in the toilet right now (although going up a little) and low or high difficulty is subjective right now. I wasn't "low" since early 2014.

Any new unit (S7 for example) cannot break even at current price. Of course you can gamble and front your electricity costs and invest, knowing BTC will go up... But right now, you cannot mine for profit fast or cheaply enough to break even, so I don't know what you're getting at.

The point is that right now its a sellers market when it comes to miners.

Mining is very profitable right now with the low difficulty and high BTC price, so nobody is selling.

Hence if you really want a miner, you will have to pay a premium

Yeah Ebay has all the oblivious people buying crap like 440MH/s usb stick for 40$. Then they come here and ask why they arent getting millions of dollars worth of bitcoin per minute.

Last time it was a guy telling i was a liar because i told him his 2 400mh miners and couples of r9 280x would cost him tons and return nothing. Apparently he was "making good money, you liar!".

That is why I like ebay on selling my old miners. I normally hit it up as it has a lot more customers bidding then on the forum it seems.

Although if it's a part unit I have had better luck on this forum.  So it really depends on what it is.  Each place has it's higher selling items, and lower selling items.

To be fair, Ebay prices tend to be fairly much higher than face to face and our marketplace's prices. I found SP20's for 300$, so i would not pay more than that, especially since we can get S5's for 250$ now.

Its a hard pick between S5's and SP20's around this price. I went with S5's for efficiency and $/GH.

I wish you would use actual pricing instead of " I would not pay more than".  Look at ebay lots of sales but it is going to be mid to high 300's to 400 as a general idea.

Miner's do not sell for what we wish they would sale.  They have a cetain value.  If you did the " I would not pay more than" at your prices you would have no miners.

 I would not pay more than $300 all-up for a SP20 at this time, and would be hesitant at more than $250.

 Even that would depend on my geting moved VERY soon to a very cheap electric-rate location (which isn't happening as soon as I hoped).

With all the s7 starting to ship, price will get down a bit more cause all the ppl will offer their sp20, so that they can upgrade!

Depends also where you leave, Europe add 2x% for VAT

Well if it has available slots, it will work. But it being a 8 pins does not change anything, the extra 2 wires are grounds, and ignored completely here. And an actual 300 watts is probably a bit much, but as i tried to say, you won't actually be feeding 300 watts.

And i say again, it will work, but it has to be very good connectors to handle it over a long period of time and we can't tell you that. I do not know how a SP20 will handle multiple PSU with slightly different voltage input.

The best might be running the SP20 on the single PSU at 1000w~ at the wall, if its rated 1200.

It's a lot of money to mess around with PSU's.  Get a proper PSU with enough PCIe cables if you want too run twords it's higher side.  Most of us with them have them underclocked as honestly they make more if paying for electricity.

But mixing PSU's is not a great idea most that do use the same PSU and 2x of them.  If separate hashing boards.... 2 different cheap psu's just looking for trouble.   But the honest anwser is get a nice PSU  and it will last multiple miners.  

Wait, though... On the 8 to 2x 6 pin, does the electricity not travel through the cable, to the first connector, then jump off to the other connector?

So in theory, could just plugging in one of the two connectors handle that flow, if it is all initially flowing through the first connector regardless? If I'm not making sense, I'm sorry. I'm crap at articulating things.. :/

Dats like a lotta' money though... :/



Also to you guys who were talking about wiring the unit up... My Photon 1200 did come with 2   8 pin to single 6+2, as well as the more typical 8 to double 6+2...

Suppose I grabbed a couple more of these for the other PSU's (CX750m) for example. With a good thick wire gauge 8 pin to single 6+2 connector, could that cable give the 300 watts? I think the main issue is wire gauge here, is it not? Obviously the 8 pin can supply 360 watts, I know that. But to supply almost that much through a single connector, I'd imagine I want it to be a pretty damn high quality cable.

I sold a few days ago, my last SP20 for 1.65BTC+ shipping costs to Portugal.

Thats fine, good double cables at 650*0.9=585/4=146.25watts per connector, well in the 190w per connector's limit for doubles. Op was talking about running effectively twice the power through the same setup.

@Quint, The PSU has a fan, and it does not go down PCI-e connectors. Also for the ASIC's their consumption is also lower at the machine than at the wall. Not that it changes much.