IP address has to be fully numeric - that .xz at the end won't work.
I'm not sure if the hostname has to be unique, but better to be so sometimes. I use something like "S5antZZZ" where ZZZ is actually the last part of the IP address.
Given your gateway and dns server addresses, everything else looks fine.

Perhaps they're building "next gen" machines and using them to replace S5s in their cloud operations, then turning around and selling the used S5s as "new"?

 Hmmmmm - where have we heard THAT sort of thing *cough KNC cough* before?

 It has no competition because Litecoin (much less any other scrypt coin) isn't worth spending money on a miner for at this point given the block reward halfing due any day now (which more than makes up for the current price after the pump-and-dump).

 I've never understood the so-called logic behind creating a chip that RELIES on BOTH SHA256 AND Scrypt being worth mining to make the CHIP worthwhile. Risk is more exponential on something like that, not just "double the risk".

 The pricing on the unit is totally insane. $800 would be MARGINAL at best on the HIGH side, and that's after factoring in the recent price gouging jumps out of Bitmain on the S5 (and the resulting SP20 pricing jumps). The SHA side is little if any more efficient than you can get out of a pair of SP20s and not THAT much better than the S5. The Scrypt side is little if any better than a Titan at max efficiency for the SFARDS, and not a lot better than the A2.

 I've ALSO never been impressed with the BOARD-LEVEL engineering displayed by Gridseed - the blades were just BADLY designed, what I've seen of the Black was little IF ANY better, the orbs were so-so at best. This makes me VERY uninclined to trust a miner UNIT from them - I'm FAR more inclined to trust Jabberwock (sp) as a board-level designer given the record of absolutely HORRIBLE board-level design in previous products out of Gridseed AKA SFARDS.

 Given their track record on board-level design, I don't see any significant sales happening to major farmers. Those folks would be more inclined to buy the chips and design their own RELIABLE board-level designs.




 Usually true, but the recent small bubble has messed up that theory pretty badly. Perhaps in a month or two after the Greece "bailout" settles out, if Bitcoin pricing settles back down again.

 Easier to just remove the PWM line on the stock fan (I prefer to pull the connector out of the plug then electrical tape it, some folks might prefer to just cut it as that's easier), then it runs at 100% all the time for best cooling.

When I got my first 3 S5s, I did some fairly substantial testing on them. I find they vary some from one to the next, one was soaking 620 watts at the wall the other two were under 610, when stock clocked. All were stock frequency running on the same Seasonic X-1250 and being measured by the same Brand power meter at the time. They all run a little different on temps, all with stock fan and the PWM lead disabled to keep the fans running at max all the time.

 There is always some small variation from one chip to the next of the same design, process variations add up.

Bitmain's site is now claiming to be out of Batch 5 on the S5. I suspect they now have incentive to get around to releasing whatever is next, since they appear to have managed to clean out their old stuff despite their price gouging price raises this month.

 (edit) Never mind, it seems to be temporarily "out of stock" when they're adjusting the amount of price gouge. It's been bouncing in and out for a few days now.

There are probably a lot more of the pods around than the GBlades - a board that would fit both would strike me as a very good idea, even though I have no pods.

I'm talking Antminer S5 chips though (1384) not S3 chips (1382) - the 1384 is the SAME SIZE (8mm square) as the GC3355 chips on the GBlade, and fit into LESS board space since they don't have leads sticking out from the chips like the GC3355 does. I have never bothered looking at the specs on the 1382 chip as it's outdated technology now and no longer available anyway.

 Power isn't an issue on an 20 string, see the BM1384 specs at .6 volts (string). 18 string is closer to the .65 volt spec than the .7 but would fall somewhere inbetween.

 10-12 chips would NOT be doable as a string, though they could be made to work with a VRM setup - optimally a software-configurable one like the SP20E has for better flexability and longevity.

  How about 8 chips, running at .6 volt 450 Mhz (BTC about 570 GH/s) .8v 450Mhz (LTC bit over 9 MH/s) option? Should be easy to fit on a 4"x8" PCB (perhaps a bit of overhang on one end to fit taller caps if needed kinda like the original GBlade boards), and the common clock in theory should make the board design a bit simpler and less expensive? Might be better to have non-common clocks kick the LTC side up to the .9v 700Mhz (15ish MH/s) option.

 Current pricing on the SF3301 chips might make this a bit hard to keep to a reasonable price though - $300 or so would be competative with anything currently available IF doable but the SF3301s alone would be $240ish....

What I'd like to see would be a replacement for the Gridseed Gblades - the original "5.2 Mh/s Scrypt" per pair ones not the blacks.

 I'm SURE, given the junk power regulation stuff on those, that there are a bunch around that have died or died on one "blade" but not the other.

 HS on those should easily handle up to 20 chips, depending on the voltage they're run at.

 Optimally voltage adjustable, but a 16-to-20 chip string should run pretty efficiently.
 I figure (based actual power usage of my S5s) that the board (with a gold PS) would use about 40% more power at the wall than the chip specs, and I get the following:

 16 string would be .75 volts   - 286 GH/s at 155 watts (might be marginal these heatsinks but should be OK with a good 90mm fan)
 18 string would be .666 volts - 200 GH/s at   80 watts (interpolating here, but this would be viable with the "specified" GBlade 12V/10A power supply per side)
 20 string would be .6 volts    - 165 GH/s at   58 watts (pretty close to a direct match on power consumption with the original GBlade, viable with a barrel power connector)


 The 16 string would be kind of like a "quarter S5", a hair more efficient but not a bit diff.
 The 18 string IMO would be the best tradeoff of performance vs. power usage and should run plenty cool on these HS with the original fan.
 The 20 string would be a VERY nice high-efficiency replacement.

 Board should be 4" x 8" to fit the original HS "pad", but could be longer on the 8" side for low-power components that don't really need the HS (like the UART and possibly a microcontroller). The pad would make it trivial to put the BM1384s on one side of it and make good heat transfer to the HS itself, put the other "taller" stuff on the other side (you have about 3/4 inch of space to work with if you design the boards to "interleave" or put tall components on a part of the board that sticks out past the HS).


 If you could get any of these configurations built and sold for under $120 or so they'd be a winner!

Vs. the Alcheminer NEW at $999 (plus shipping in both cases), Alcheminer is TWICE the MHash (rated 256, commonly 220ish on most pools that it works with) though it does soak a bit over twice the power), this is NOT a competative price nor a competative miner. It might be price competative in the $600 range (plus shipping), but at $1400 it's WAY to expensive and will probably never pay off since the "pump and dump" on LTC is now over.


 Same issue with your current sale on used SP20s - they're $80-$150 more for used units vs. most listings on eBay/Amazon, and NO guarentee they're in any better shape. Drop THOSE under $500 and they'd be reasonable, since you ARE including shipping on those (currently).

 Last SP20 I bought via Amazon was under $490, looked like it had almost not been used at all, and is running great....

USA electric prices vary widely, sometimes with time of year (I pay about .14/kwh in 3 months of the summer, about .10/kwh rest of the year on average in my current Iowa location) and DEFINITELY with the area (there are 3 counties in Washington that have rates under .05/kwh (2 of them under .04/kwh), due to massive hydro projects owned by the PUD of each of those counties).

 There is a reason MegaBigPower located it's Washington farm near Wenatchee...