Topic: ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH - page 205. (Read 451277 times)

That would be the measurement of the S5, was that what was used for the SP20 as well? I use a watts-up pro to measure the power, the same that we use for DC calculations it is pretty accurate an the SP20 measurement floats depending on a specific unit but they are below 600. The best part is you can under clock them so the life of the miner will be longer as you can clock down for better efficiency.

I have both units and would not say that somebody is nuts for using one over the other as they both serve a specific purpose when looking at the big picture.

Well, if your brother has this meter then if you don't have it now then you can easily get it back shortly.  I'd like to see a pic. of this meter with that reading on it.  Sorry if I don't believe you, especially if this is in a 120v country.  I've got a voltage step up converter that puts out 230v which should be about 2% more efficient.  My meter shows about 1,060-1,070 watts for two S5's (that's 530 to 535watts each) downclocked to 312.5M (1,030 Gh/s) on a 1500w TITANIUM RATED power supply.  So I don't think it's possible that you are getting on a S5 1,200Gh/s on 525watts (no matter what your ambient temp. is).  

I used my brothers Power meter he works for the power company I get me electric from and that's what it stated you cant get A better meter than that!!! he is a line man.


 

I agree. Was waiting on bitmain to make a move to match the sp20 price drop. Just put in an order for 3x sp20 instead, and they accept paypal too.

If indeed bitmain have increased the price of the S5, and the percieved price increase is not merely BTC tracking the dollar rate, then bitmain know something we don't.
For all the comparisons being pumped out on efficiency et al, I am sure bitmain are aware of them, at least the people with real clout at bitmain are. To assume they would increase prices, knowing the SP20 mix would offer a better paper ROI / efficiency than their own product and them not realising the effect this may have on their sales is naive at very best. I mean, these are the guys who, in my opinion, are the market leaders in bitcoin ASIC hardware, but you can not give them credit for their ability to weigh the market? I'd be damned!

Bitmain by increasing their price will cause sales of sp20 to go up.

here is the reason:
3 s5 to the usa cost $1140
performance 1150 GH/s

$ per GH/s 0.33

for the s20 since shipping is free total $1200
performance 1700 GH/s 0.23

much better performance per dollar.

in terms of electric efficiency, since basically they cost about the same after shipping $380 vs $400, it would be fair to compare them at the same performance, the sp20 undervolted to provide 1150GH/s would probably give similar consumption.
Someone with an sp20 would provide that info.

But after the price increase for the S5 the SP20 is a much better choice, I am sure bitmain will be force to drop their prices in less than a week from now.

if we use the $ per GH/s ratio of 0.23, for the S5 to be able to compete against the S20, the S5 would have to be priced at $264 including shipping, but since it does not include shipping it would have to be priced at $224, at nearly double this price it is no match for the SP20, I was hoping bitmain would lower their prices against the competition, but instead they were increased, this is a very bad indication that they are loosing ground. I would think in less than a month assuming spoondolies does not lower their price would have to be prices around $200 otherwise spoondolies will get all the sales, now if spoondolies lowers their price, the sp20 will have all the market for themselves at least for a while.

I am comparing in a group of 3 since that is something that most miners could do easily and provides best price for sp20, for the S5 the group is 52 units which is way to large for most of us.

I know they have removed any references to the 9v under-volt from the product description now, but on release they said you can undervolt to 9v to achieve better efficiency, thus the quote for the rated voltage is for running the unit at standard settings, but I was refering to over-voltage here.
So the question remains, what is the safe overvolt voltage for the S5?

OBITER DICTA:
1. I have run my S5 with just 1 PCI-E connector to each board off a 550W PSU at stock freq and it run OK, though clearly the PSU was being overloaded.
2. Up to this day, I run all my overclocked S3's with just 2 PCI-E connecotrs without any issue despite it being recomended to use all 4.

Specifications

Hash Rate: 1155 GH/s ±5%
Power Consumption: 590 W (at the wall)
Power Efficiency: 0.51 J/GH (at the wall)
Rated Voltage: 12V
Dimensions: 298 mm x 137 mm x 155 mm
Cooling: 1x 12038 fan
Operating Conditions: 0 °C to 35 °C
Certified By: FCC / CE
Network Connection: Ethernet 

Notes

1.   Power consumption figures vary with your PSU’s efficiency, the ambient operating temperature and the accuracy of the power meter.
2.   PSU: A power supply unit is not included, and you will need to provide an ATX PSU. There are 4 PCI-e connectors for +12V DC input and all four are required. Do not connect more than one PSU to the same hashing board.

Over-volting is NOT a hardware modification .... but then again,  overclocking ALSO voids the warranty so if you've run your rig at non stock freq then you've already voided your warranty too! Still, would be nice to know a safe over-volt voltage ..... we know they can be under-volted to 9v, so would be nice to know the uppper voltage limit.
I was playing about with one of my server PSU's potentiometer and can get it to 14.8v without any load .... and that is the smaller ones, not tried the bigger ones yet.

0.4375W/GH/s    Only in your dreams.


Hash Rate: 1150 GH/s     0.53W/GHs  


...any hardware modification will void Bitmain Warranty Qualification.....

Waffle, and even more regurgitated waffle of a response from dogie, again!
1. If the S5 can OC with an increase in voltage, of course the increase is going to come from the PSU, not onboard DC to DC converters.
2. Adjustable voltage on the unit? In the context of over-volting, how relevant is that, if at all?

Most, if not not all, PSU's (pertinently server ones) have potentiometers that you can adjust the output voltage on, though I'd not recomend any dogie, dick and harry to do it as you need some knowledge to safely do it, that without compromising the longevity and efficiency to a great / significant degree.

The million dollar question is, and dogie you can excuse yourself from responding to this one, what is the maximum / safe over-voltage that can be applied to an S5?

You can't from the unit's side as there is no adjustable voltage [or any true DC/DC], you'd have to modify the PSU's 12V input higher which isn't going to happen with a normal PSU.

On a 60% load PSU for 92% effeciency I get 584W on 125V outlets for the S5 with 1150-1250GH at the pool.
SP20 at 1150-1250GH is 620W-640W, but if you have cheap electricity the 1700 option at 1200W+ is nice, if not then S5 is more profitable depending on the buy in price.
As a owner of both with the bitcoin price rebound, I'm currently quite happy with ROI prospects.

What watt meter did you use to get your information or are you just using printed specifications.

you got to be nuts a sp20 over an s5 look how much power it uses.


Specifications: Spondoolies-Tech SP20 Jackson
Hash Rate: 1.7 TH/s ± 10%, 200 GH/s per chip
Chips: 8x 28nm Spondoolies-Tech RockerBox ASICs
Controller: TI Sitara 1GHz (based on Beagle Bone Black) cgminer with custom plugins
Size: D 382mm x W 110mm x H 137 mm
Network: Single 10/100 Ethernet port
Fans: 1 X 120 mm
Power: 4x ATX PCIe
Power Consumption: 1200 W w/ a 0.9 Efficiency PSU
Ambient Operating Temperature: 0 °C to 35 °C


S5 only pulls 525 watt at 1200 Gh/s!!!

and suck more power from your wall and cost more for electric lol.

I agree....y the heck do they keep doin this?? When the price of btc dropped they lowered the cost of the miners then when im about to order some i see the price of btc went up maybe $10 but bitmain jacked up their prices $37 bucks per miner. Call me crazy but shouldnt the btc amount go down as the usd prices go up?? Needless to say im not buyin s5's now. Theres no reason for this price increase expect trying to get more and more from their customers so i just wont buy from them. Like others have said sp20's prices only go down and hash at the same w per gh as the s5 and run with alot less noise too lol.

The blood in the mechanism should make the rig mine more money.  Blood money, but hey.

-dave

I was considering the Antminer S5, I've enjoyed using their last two products but unfortunately due to the greed here(drop in btc value != increase in price, covering for potential losses), I will be getting my self an enclosed SP20.