Bought a S7 from Batch 5 I have two EVGA Supernova G2 1300 watt PSU's I want to use with it the question is The S5 when using one PSU only measures 11.88v on the PCI-E Connectors when Under full load "HASHING" no overclock does anybody think if I use two PSU's on the S7 will it give me a problem ?
Question 2: what does the S7 do when it don't get enough voltage does it BURN UP like the S5 ?
Question 3: Are there any 1500 watt 12vdc to 15vdc variable output server PSU's out there if so what's the link ?
Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 225. (Read 528055 times)
November 05, 2015, 04:04:03 PM
November 05, 2015, 03:54:50 PM
Batch 4 and 5 are sold out.
lasted just a couple of days.
anyway, my B4 order finally 'turned green'.
Interestingly, S7 batch 6 went from 162 to 145 chips (144? as 145 cannot be divided by 3-weird)
This contains an error, they put 45 chips per hasboard, total 135 chips, not 145:
batch 1, 3 and 5: 4860 / 162 = 30 (total hashpower / number of chips = hashpower per chip)
batch 6: 4050 / 30 = 135 (total hashpower / hashpower per chip = number of chips)
So, they went from 54 chips per hashboard to 45 chips per hashboard.
Now it is easilly to found a PSU, but it is still too high...
Well the maths works for 135 Chips . The only snag is that with 45 chips / Board the only maths that works is 15 Nodes of 3 Chips, one less node than with 144 Chips and that would mean that the Core Voltage with a 12V Supply would be even higher. 12V / 15 = 0.8V and that is way too high. That is if the BM1385 Data Sheet is to be believed?
Rich
And whats the deal? Its the same price, or even higher than the "lesser batches" for less hashrate. What is this, the "Lays marketing trick" where they just sell less chips per bag but use the same price to milk more money off customers?
They must have implemented something on the board to regulate down the Voltage to the 0.6X range, why go through all this trouble? I don't get it and its bothering me, mostly because i was thinking on picking up one soon, i guess.
This is not what i had in mind when the rumors of the "S7 mini" started going around...
November 05, 2015, 03:49:30 PM
Bought a S7 from Batch 5 I have two EVGA Supernova G2 1300 watt PSU's I want to use with it the question is The S5 when using one PSU only measures 11.88v on the PCI-E Connectors when Under full load "HASHING" no overclock does anybody think if I use two PSU's on the S7 will it give me a problem ?
I've got 2 of my machines using one of these power supplies. 1 EVGA Supernova G2 1300 watt PSU per S7.
Been humming along for a couple weeks without issues.
November 05, 2015, 03:29:40 PM
Batch 4 and 5 are sold out.
lasted just a couple of days.
anyway, my B4 order finally 'turned green'.
Interestingly, S7 batch 6 went from 162 to 145 chips (144? as 145 cannot be divided by 3-weird)
This contains an error, they put 45 chips per hasboard, total 135 chips, not 145:
batch 1, 3 and 5: 4860 / 162 = 30 (total hashpower / number of chips = hashpower per chip)
batch 6: 4050 / 30 = 135 (total hashpower / hashpower per chip = number of chips)
So, they went from 54 chips per hashboard to 45 chips per hashboard.
Now it is easilly to found a PSU, but it is still too high...
Well the maths works for 135 Chips . The only snag is that with 45 chips / Board the only maths that works is 15 Nodes of 3 Chips, one less node than with 144 Chips and that would mean that the Core Voltage with a 12V Supply would be even higher. 12V / 15 = 0.8V and that is way too high. That is if the BM1385 Data Sheet is to be believed?
Rich
November 05, 2015, 03:19:43 PM
Batch 4 and 5 are sold out.
For Sale is
ANTMINER S7 BATCH 6
AntMiner S7 BATCH 6 with 4.05th/s is available to order. Shipping may start between Dec. 7 ~ Dec. 17 (if shipped out 5 days later than it, it won't be considered as delay ).
Chip quantity per unit: 145x BM1385
Rated Voltage: 11.60 ~ 13.00V
Dimensions: 301mm(L)*123mm(W)*155mm(H)
Interesting decision on their part... looks like still has 3 blades. So were talking 9 PCIe + 1 controller.... for even less hash. I was hoping to see a dual blade with this rumored version.
I'm guessing quality control was not working they kept having to check if each hashboard ran at higher freq. So I'm guessing they lowered it all and now they don't have to do as much quality control, and not having to sell higher and lower freq version.
strange though because it still says default freq is 600M
November 05, 2015, 03:11:52 PM
Batch 4 and 5 are sold out.
For Sale is
ANTMINER S7 BATCH 6
AntMiner S7 BATCH 6 with 4.05th/s is available to order. Shipping may start between Dec. 7 ~ Dec. 17 (if shipped out 5 days later than it, it won't be considered as delay ).
Chip quantity per unit: 145x BM1385
Rated Voltage: 11.60 ~ 13.00V
Dimensions: 301mm(L)*123mm(W)*155mm(H)
Interesting decision on their part... looks like still has 3 blades. So were talking 9 PCIe + 1 controller.... for even less hash. I was hoping to see a dual blade with this rumored version.
I'm guessing quality control was not working they kept having to check if each hashboard ran at higher freq. So I'm guessing they lowered it all and now they don't have to do as much quality control, and not having to sell higher and lower freq version.
strange though because it still says default freq is 600M
November 05, 2015, 03:06:58 PM
I think this product is not worth more than $ 1,000, maximum $ 1,100
They have the price set to 4 BTC now...so let's get that BTC price down to 250 and then it's a buy.
November 05, 2015, 03:02:49 PM
I think this product is not worth more than $ 1,000, maximum $ 1,100
November 05, 2015, 02:57:55 PM
Batch 4 and 5 are sold out.
lasted just a couple of days.
anyway, my B4 order finally 'turned green'.
Interestingly, S7 batch 6 went from 162 to 145 chips (144? as 145 cannot be divided by 3-weird)
This contains an error, they put 45 chips per hasboard, total 135 chips, not 145:
batch 1, 3 and 5: 4860 / 162 = 30 (total hashpower / number of chips = hashpower per chip)
batch 6: 4050 / 30 = 135 (total hashpower / hashpower per chip = number of chips)
So, they went from 54 chips per hashboard to 45 chips per hashboard.
Now it is easilly to found a PSU, but it is still too high...
November 05, 2015, 02:52:21 PM
They have lowered the price and power?
almost the same price of the lot with 4 power 4.86 th / s
and now they recur with less power and less chip?
for me if I can keep, bitmain and too greedy for money
almost the same price of the lot with 4 power 4.86 th / s
and now they recur with less power and less chip?
for me if I can keep, bitmain and too greedy for money
November 05, 2015, 11:48:57 AM
Batch 4 and 5 are sold out.
lasted just a couple of days.
anyway, my B4 order finally 'turned green'.
Interestingly, S7 batch 6 went from 162 to 145 chips (144? as 145 cannot be divided by 3-weird)
That'd be 0.75v at the chips, assuming 3 strings of 16 chips on each board.
According to the datasheet, they can't get 0.25J/GH efficiency at 0.75v, so something is wrong there.
The possible way to do it is with 4 panels, 36chips on each, and then, you are at 0.66v at the chips, 0.25J/GH efficiency.
I agree something is wrong and has been wrong ever since the first S7 release. Even then the Core Voltage v Frequency was too high relative to the information in the BM1385 Data Sheet. This to some degree was backed up by their very tight PSU spec. Things then got worse, relative to the Data Sheet, when they reduced the frequency, and have now further degraded with the 16 Node v 18 Node string.
So for some reason the BM1385 chips are not performing at the Core Voltage / Frequency that the Data Sheet implies. First time I have seen this all earlier chips were very close in a system to the Data Sheet numbers.
Rich
November 05, 2015, 11:29:41 AM
Batch 4 and 5 are sold out.
lasted just a couple of days.
anyway, my B4 order finally 'turned green'.
Interestingly, S7 batch 6 went from 162 to 145 chips (144? as 145 cannot be divided by 3-weird)
That'd be 0.75v at the chips, assuming 3 strings of 16 chips on each board.
According to the datasheet, they can't get 0.25J/GH efficiency at 0.75v, so something is wrong there.
The possible way to do it is with 4 panels, 36chips on each, and then, you are at 0.66v at the chips, 0.25J/GH efficiency.
November 05, 2015, 11:25:43 AM
I think that Batch 6 could end up being a good buy. For some reason the BM1385 chips do not seem to be performing to spec and they have upped the Core Voltage by reducing the number of chips. This is in place of reducing the frequency that they have done to 575MHz & in some cases to 550MHz.
The new PSU specification is much easier to achieve being 11.6V to 13V whereas before it was 12.0V+5%, should not be less than 12.0V. I suspect in some cases people, dependant on how good their PSU was, will have had less than 12V at the Hash Board?
So I think Batch 6 will have no problem performing to specification and I would expect it to be possible to Overclocked. My guess.... is that with 12.8 V supply 675MHz and possibly 700MHz would be possible giving 4.5TH & 4.7TH.
No guarantees with the above. I have not seen or tested one and am just working off the same data you all have.
Rich
I'm inclined to agree, but then bitmain could have advertised it as at least 4.2th?
Also, increased voltage means lower efficiency
November 05, 2015, 11:09:21 AM
I don't know if I want to roll the dice with a batch 6 or not. I would like to know why they dropped the number of chips in it? I have a batch 3 and it's performing great, I haven't rebooted it since I flashed the new firmware. Hell I was even going to get the batch 4 at 4.66TH since it was a bit cheaper. But losing over half a TH for a miner that's slightly cheaper than the batch 4 is crappy.
I may just do it once I get my funds back up just so I can sell off my last S5 and S3+...those two are using just about the same amount of power the batch 6 uses, but damn I would love a 4.86 or a 4.66 for just a little more money.
I may just do it once I get my funds back up just so I can sell off my last S5 and S3+...those two are using just about the same amount of power the batch 6 uses, but damn I would love a 4.86 or a 4.66 for just a little more money.
I think that Batch 6 could end up being a good buy. For some reason the BM1385 chips do not seem to be performing to spec and they have upped the Core Voltage by reducing the number of chips. This is in place of reducing the frequency that they have done to 575MHz & in some cases to 550MHz.
The new PSU specification is much easier to achieve being 11.6V to 13V whereas before it was 12.0V+5%, should not be less than 12.0V. I suspect in some cases people, dependant on how good their PSU was, will have had less than 12V at the Hash Board?
So I think Batch 6 will have no problem performing to specification and I would expect it to be possible to Overclocked. My guess.... is that with 12.8 V supply 675MHz and possibly 700MHz would be possible giving 4.5TH & 4.7TH.
No guarantees with the above. I have not seen or tested one and am just working off the same data you all have.
Rich
November 05, 2015, 10:22:50 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
i can reach all the way to the confirm button, but not going to try, it`s alot of money to bet on a maybe it will work !!!!!
and i`m sure as hell not buying a batch 6 at 4 btc.oh well, at least i`ll be ready for the next one.
I don't know if I want to roll the dice with a batch 6 or not. I would like to know why they dropped the number of chips in it? I have a batch 3 and it's performing great, I haven't rebooted it since I flashed the new firmware. Hell I was even going to get the batch 4 at 4.66TH since it was a bit cheaper. But losing over half a TH for a miner that's slightly cheaper than the batch 4 is crappy.
I may just do it once I get my funds back up just so I can sell off my last S5 and S3+...those two are using just about the same amount of power the batch 6 uses, but damn I would love a 4.86 or a 4.66 for just a little more money.
November 05, 2015, 10:00:05 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
i can reach all the way to the confirm button, but not going to try, it`s alot of money to bet on a maybe it will work !!!!!
and i`m sure as hell not buying a batch 6 at 4 btc.oh well, at least i`ll be ready for the next one.
November 05, 2015, 09:48:09 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
i can reach all the way to the confirm button, but not going to try, it`s alot of money to bet on a maybe it will work !!!!!
November 05, 2015, 09:36:49 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
i can reach all the way to the confirm button, but not going to try, it`s alot of money to bet on a maybe it will work !!!!!
Kaltar,
Batch 3 already shipped, batch 4 and 5 have come and gone. There is zero chance you will receive a miner if you purchase from Batch 3, and even if you try I'm pretty confident it won't allow you to check out/confirm. You wouldn't be sending the money until after confirmation screen anyways, so try for yourself.
November 05, 2015, 09:30:51 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
i can reach all the way to the confirm button, but not going to try, it`s alot of money to bet on a maybe it will work !!!!!
November 05, 2015, 09:24:01 AM
what do you guys think, i was about to buy a S7 Batch 3 but was having trouble pulling all the BTC together, but i check today and i still have the order in my backet ready for checkout, do you think if i check it out, they will honor it, or will it be pain in the ass, if they don`t and getting my BTC backs..
It is so easy.
You can not checkout.
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