I own three S2's (1THs) that run right at 550-720GHs poolside if rebooted twice a week. Otherwise less. One has a hashing board that dies after 5-6 hours (all x's) until it get s hard boot.
I had hoped to bump them out of service, replacing them with S4's. After seeing the initial release price, there's no way I can gamble another round. I got taken once. It won't happen again. Sorry, Bitmain. Not even close to being worth the risk. I see how you treated me on S2's and S3 Batch 1-4. Your customer relations are as shaky as your hardware.
(Full disclosure: I have ten S1's and two S3+'s and love every one of them. The S2's are just absolute dogs and S4 pricing is a farce.)
What about holding out to see what the S2 Upgrade kit looks like?
The experience that you and many others have had with S2s is a reason why I will never buy a batch 1 product from any manufacturer. I'd rather let impatient people be the testers and I'll wait for price to come down and see how they are working for people before I buy.
I am definitely hanging in there for the S2 upgrade kits... the only reason I haven't given up and ditched my units on ebay. I don't have very high hopes though after seeing what a joke the S1 upgrade kit price is compared to a new S3+. I was all set to buy ten of them until I calculated how much I would lose in hashing speed vs. lose in fiat with the upgrades. That's why I own the S3+'s now. S1 upgrades were not a responsible choice.
I was proud of being an Ant farm... now I cannot wait for the next developer to come along. My loyalty has been taken for granted and Bitmain is trying to stick it to everybody, first by driving up difficulty competing and then by their equipment prices and customer standards. I know they are a business out to make money, but they shouldn't then also pretend to be our friend. This is a world of business, and they are simply practicing the hard and shady side of it.
My 0.02.
C'mon manufacturers. Gimme SOMETHING to spend my money on already.-OCS
I have a feeling the S2 upgrade will be much more reasonable compaired to the S1 kit. The S1 upgrade was basically an unassembled S3 where the S2 should pretty much just be boards. No PSU, no case, no fan upgrades.
If I had to guess, I would guess the upgrade will be priced at about 1000. A very reasonable price compared to a full S4