ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[AriesIV10]

along these lines  100% fan speed  goes to about 4400rpm  don't use 100% ever.  Three reasons are:

1) power sucker uses the most power.
2) cooling improvements level off above 4200 rpm
3) much more likely to burn the controller out due to higher power use at 100%.

Also  The manual setting of 50% or greater will keep the miner safe from internet drop outs in most cases.

I just adjusted all of my S7's to 50% manual fan per your recommendation.  Two of my batch 8's also had to have their frequency reduced to get their temperature to 65 C or lower.  One of them I had to reduce the frequency to 650 MHz.  The other to 687 MHz.  I'm all about taking care of these rigs to hopefully increase longevity of the blades and the controller. 

EDIT:  The odd thing is the ambient is approximately 11 C.  Yet, two of them had to have their frequency lowered to reduce temperature.

I personally believe batch 7 was the best Batch of all the S7's.  At least from the one's I have.  I have Batch 1, Batch 5, Batch 7 and Batch 8.  My Batch 7 at factory 625 MHz is hashing at 5,055.92 GH/s with 0.0025% HWE's and fan at manual 50% with 3,600/3,350 RPM's on the fans with 54, 49, 48 temps on the blades.

I have to agree with you on the B7 are the best batch.  Mine are running solid with the same type of numbers.

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[AriesIV10]

I just made another set of orders for the B8s.  I really liked the B7s the best, but this is the only feasible option. 

Gotta GROW!!!

[yslyung]

not mine, my friend's s7, not b8 though .. for your viewing pleasure :

[rockyforever]

not mine, my friend's s7, not b8 though .. for your viewing pleasure :

did that start from the board or the pcie cables?

[marvykkio]

fuck, I regret having bought 3X S7 Batch 8

[marvykkio]

I always said that Chinese stuff is the most poor in the world

[MaximeAD]

I always said that Chinese stuff is the most poor in the world

Better than Italian Bitcoin miners though.

[bittalc1]

I always said that Chinese stuff is the most poor in the world

Better than Italian Bitcoin miners though.

+

[marvykkio]

I always said that Chinese stuff is the most poor in the world

Better than Italian Bitcoin miners though.

+

in Italy the miners can be counted on one hand

but not to compare the china, and its products with Italy because it is as if comparisons
gold, with straw

[hawkfish007]

Here is a previous shipment of 9 x S7's with the Duty Class Code Number: 8523.51.00 Semiconductor media: Solid-state non-volatile storage devices....................... No............. Free  Which see:

Here is a copy of the bill from UPS on that shipment of 9 x S7's with the classification of 8523.51.00.  Notice there was no "Duty Amount" because it was FREE on this shipment.

https://i.imgur.com/7vqvaCC.jpg

Here is the code number and what it represents:



This time they want to charge me 2.6% under classification 8543.70.9650:

https://i.imgur.com/7NLKpye.jpg

Which see:

https://i.imgur.com/IbJ5xZI.png

The whole damn thing just pisses me off.  I think someone in customs that day saw "BITCOIN MINER" and was like, "What the hell is that?"  I'll just label it under "Other" and charge 2.6%.

You can bet your ass I'm disputing this with customs.

I just got a bill from UPS for the first time also. Mine was classified as 8487.90.0080. Do you have a link to the Duty Class manual? Have you contacted UPS yet? It appears that UPS reps are randomly classifying the miners and imposing a duty.

[marvykkio]

the code should be 8471410090

[Tupsu]

the code should be 8471410090

Only in EU  8471 41 00 90

[Biodom]

Here is a previous shipment of 9 x S7's with the Duty Class Code Number: 8523.51.00 Semiconductor media: Solid-state non-volatile storage devices....................... No............. Free  Which see:

Here is a copy of the bill from UPS on that shipment of 9 x S7's with the classification of 8523.51.00.  Notice there was no "Duty Amount" because it was FREE on this shipment.


The whole damn thing just pisses me off.  I think someone in customs that day saw "BITCOIN MINER" and was like, "What the hell is that?"  I'll just label it under "Other" and charge 2.6%.

You can bet your ass I'm disputing this with customs.

I just got a bill from UPS for the first time also. Mine was classified as 8487.90.0080. Do you have a link to the Duty Class manual? Have you contacted UPS yet? It appears that UPS reps are randomly classifying the miners and imposing a duty.

now "other" seems to be 3.9% fee. Why is this not a computer or computer part? Not sure about silicon storage device-even that is better.
Honestly, this is what Bitmain should be doing (providing a valid tariff code to customs)
Spondoolies was providing HS code to customs last year: 8471-7000 (I checked and it appears to correspond to Storage units without further classification).
8523.51.00 seems to be essentially the same as SPT code above, so either should be good as they describe the same thing.

[Crypto84]

is https://bitcoinwisdom.com/bitcoin/calculator a good place to calculate ROI? i keep messing with this thing and still cant find ROI.....everytime i do it im in the hole $700+ after 200+ days. these things need to be cheaper. and with the reliability issues of late, i think im better off just buying a bunch of btc and seeing if it increases in value over those 200 days...when stuff lasts 2 weeks and burns up or fails..... that means it is total crap!

[hawkfish007]

Here is a previous shipment of 9 x S7's with the Duty Class Code Number: 8523.51.00 Semiconductor media: Solid-state non-volatile storage devices....................... No............. Free  Which see:

Here is a copy of the bill from UPS on that shipment of 9 x S7's with the classification of 8523.51.00.  Notice there was no "Duty Amount" because it was FREE on this shipment.


The whole damn thing just pisses me off.  I think someone in customs that day saw "BITCOIN MINER" and was like, "What the hell is that?"  I'll just label it under "Other" and charge 2.6%.

You can bet your ass I'm disputing this with customs.

I just got a bill from UPS for the first time also. Mine was classified as 8487.90.0080. Do you have a link to the Duty Class manual? Have you contacted UPS yet? It appears that UPS reps are randomly classifying the miners and imposing a duty.

now "other" seems to be 3.9%. Why is this not a computer or computer part? Not sure about silicon storage device-even that is better.

I quick call to UPS solved the issue, they just wanted to make sure what type of device it is. I told them that it is a data processing machine which does nothing but data processing. I received an email that the fee will be credited to my account in 6-8 weeks.

[IITravel01]

My batch 9 arrived today, had to pay UPS about $30 upon delivery.

My first S7, but I notice some differences from the other S7 pictures.  The controller board on top only has 3 connector ports for the 3 blades, there are no other ports to connect cables to.  Also, the PCI-e power connector on the board is upright and not to the side.  Also, only 2 fan ports on the controller board.  Is this different from the batch 8s?

[hawkfish007]

My batch 9 arrived today, had to pay UPS about $30 upon delivery.

My first S7, but I notice some differences from the other S7 pictures.  The controller board on top only has 3 connector ports for the 3 blades, there are no other ports to connect cables to.  Also, the PCI-e power connector on the board is upright and not to the side.  Also, only 2 fan ports on the controller board.  Is this different from the batch 8s?

You probably got a B8, B9 are not scheduled to ship until the 20th. B8 and 9 are similar in design, 3 data ports and 2 fan ports.

[IITravel01]

My batch 9 arrived today, had to pay UPS about $30 upon delivery.

My first S7, but I notice some differences from the other S7 pictures.  The controller board on top only has 3 connector ports for the 3 blades, there are no other ports to connect cables to.  Also, the PCI-e power connector on the board is upright and not to the side.  Also, only 2 fan ports on the controller board.  Is this different from the batch 8s?

You probably got a B8, B9 are not scheduled to ship until the 20th. B8 and 9 are similar in design, 3 data ports and 2 fan ports.

Might be the same, but I ordered a B9 before the price drop, then received an e-mail that my S7 would ship early (04 Jan. instead of 20 Jan.) due to the price decrease.  So it's supposed to be a B9.  Hopefully they are the same if it's a B8.

[Prelude]

My batch 9 arrived today, had to pay UPS about $30 upon delivery.

My first S7, but I notice some differences from the other S7 pictures.  The controller board on top only has 3 connector ports for the 3 blades, there are no other ports to connect cables to.  Also, the PCI-e power connector on the board is upright and not to the side.  Also, only 2 fan ports on the controller board.  Is this different from the batch 8s?

B9 is B8 with a later shipping date.

[fr4nkthetank]

Yeah.  Pretty sure b8 is final batch variation.  So batch numbers will simply = shipping time, as before.  Made me wonder, just now, why all the batch variations until batch 8.  I think I know why, call it a hunch.  See all that hashrate going up ?  difficulty going up like crazy ?  Bitmain is responsible for a sizeable part of that, but the fact is that they were in a RUSH to sell these s7's, and they needed to ship them out asap.  each week that passed by was loss of money, as the other players were bringing lots of hash power online.  Plus halving.  Idk, my2cents.