Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 334. (Read 531297 times)

Could anyone recommend a power cord (preferably Amazon Prime) that would work with the Bitmain APW3-12-1600 PSU's that would work on 208v and/or 220v?  

Thanks.

I wished there was a 1600w 120v server PSU instead of having to spend $320 on the EVGA.

I know how you feel.  I'd love to run on IBMs 2800s, but I simply don't have the electrical infrastructure to make it work.  I don't have the luxury of starting from scratch and ROI is tough enough without electrical modifications (and what would I do with a ton of 240V when I'm done mining).

That said, ATX PSUs are far too expensive to be a long term solution also.  What I did was grab a few 900W (on 115v) HP-DPS1200s and hard wired them for load sharing.  That effectively gives you an 1,800W server PSU for about $70.  Add the cost of cables and you're still way ahead when compared to EVGA.

Past 750W I don't think it makes sense to buy ATX.  I wish someone would push out a single, or even double, blade version of the high efficiency chips for home mining.

@OgNasty,

Please wait for a few more minutes!!  PM on the way

Shocker...   

Looks good, I don't see any issues with kano pool.

S9 can hash in other pools as usual. I will upload more screenshots from other pools as they becomes available.

I have 3 S7's from 3 different batches and mining on Kano with greater than 100% luck, none of them have broken even yet, although 2 of them are close if I do not include the PSU.  But I do include the PSU in my ROI calculations since I buy them from newegg with BTC.  I bought brand new EVGA 1600's for the S7's so they were somewhere around 1 BTC each at the time of purchase.  So those two S7's need to generate about 1.2 BTC to break even on the miner itself plus the PSU.  My 3rd S7 is further behind, it needs another half bitcoin to get caught up to the other two, so 1.7 BTC to break even on the miner plus the PSU.  I expect I will probably break even on the miners by the halving but the PSU's may not get paid for for some time.  I could sell the S7's at or close to break even on the miner and upgrade to S9's (just transfer the cost of the PSU's from the S7's to the S9's in my calculations) but I am with Puffy on this, it would cost more BTC then it would generate so totally not worth it at the current price.  If BTC value continues to rise it may get to a point where it is worth it even at $2100 but we got a lot more value to go up before that happens.  I have never purchased BTC with fiat so all of my miners are purchased with BTC I already mined going back a while now.  It makes zero sense for me to buy a miner with BTC I already have that will generate less BTC than it costs.  Until that calculus changes I won't be buying one of these things.

Knowing sidehack's precision, he probably already cranked the numbers that he posted as being the likeliest.
Why would we get a drop anyway (from now to July)?
Plus, minor point, but S9 is NOT more than three times S7 (at least not B1, 3, 5,7, 8-16). 14/4.86 (B1,3,5)=2.88; 14/5.06 (B7)=2.77; 14/4.73 (B>eight)=2.96
Just saying.

Biodom - Actually I was just winging it and using numbers that would backtrack to S9 purchase price for comparison. But using dmwardjr's mining return numbers...

So an S9 would cost me a quarter coin in power if coin is at $1500, leaving me 1.95BTC from the 2.2BTC mined if I roll the entire power cost forward each month for a recompense in December. Though unrealistic, that makes the comparison easier (and also the most optimistic).

So I should buy 1.95BTC right now for about $1150 and cash it out for $2900 at the end of the year for a net profit of $1750?
Or should I buy 3.6BTC right now for about $2100, buy an S9, pay $360 in electric over the next 6 months, mine 2.2BTC and cash it out for about $3300 at the end of the year for a net profit of about $800?
Or should I buy 3.6BTC right now for about $2100 and cash it out at the end of the year for around $5400 for a net profit of around $3300 and no monthly expenditure?

If I'm paying monthly for power on an S9 by selling the required amount of coin monthly, I only actually keep around 1.86BTC by the end of it, so I'd cash out for about $2800 and a net profit of $700. Or I could have bought 1.86BTC for about $1100 and cash it at the end of the year for a $1700 profit.

Your numbers aren't very favorable for buying an S9 fresh. If an S7 runs 1/3 the hashrate it should net 1/3 the coinage, so about 0.73BTC which is currently valued at around $430. I can get an S7 aftermarket for around 0.5BTC and spend 0.25BTC on power (if I roll all my costs forward to recompense in December) for an ultimate breakeven. Or I can keep the BTC and cash out at year's end for a $450 profit. Dang, as much as I like the idea of $1500 coin those numbers really aren't encouraging at all for miners.