Please beat SP20 in watts and price and I'll order a couple of truckloads 
The SP20 is equivalent to the S3 in all aspects. I don't know why SPTech would release that unit, at that hashrate, at that delayed timeframe because it's no better than an S3 which is shipping today. Waiting another 6 weeks for something I can get next week (new), or now (used)? No thanks.I'm going to assume the S4 will be better than the SP20, and arrive sooner. It should follow the same upgrade path just like the S1 -> S3. Meaning, it should just about double the hashrate for the same wattage, which will mean 2th/s at 1100w. I see it coming in at around 2.2-2.4th/s at 1200w, but that's just my guess. The only real question is the price. If it's up around $1800 like the original was, it's a hard sell. If it's down around $1400 or lower, then it's a good unit. If it's around $1000, then back up the truck...
they wont give u the best PSU inside these device
just like S2, enermax 1000W ==a
They're choking the PSU hahaha
lets assume...
- i can buy a better PSU (in terms of efficiency, reliable, and trusted)
run it for 1or 2years
, then sold it via local or Ebay with a good Price (prefer local)and ofc its easy to sell PSU, just cut 10-20% of the new price (coz its 2nd hand)
so, maybe we dont need to calculate the PSU while we can get back about 80-90% money spent on it
- i buy 5 units of S3+ (BTC2.9) , run it without OC, i get 2250 Gh/s (we play long term and no AC, no money for it
)- S4... u'll get 2PSU inside for sure, they wont place something like 1500w Platinum for sure again..
or... maybe they'll place server PSUi dont trust these server PSUs. noisy, no warranty (even if Bitmain give u the warranty, its not worth it, heavy + wasting money on shipping back to China)
better get something that you can claim locally
- even if Bitmain give u 2units of 700 / 750 / 800 / 850 W PSU, can you claim it locally?
hope you guys can compare it better than me, save ur money for the better things.. haha