Best PSU for Antminer S1

[AlextheBitcoiner]

I just ordered five Antminer S1 units and I have some questions regarding the "Best" power supply (PSU)

Option 1). A single 500 watt power supply dedicated to one Antminer S1
Option 2). A single 850 watt power supply dedicated to two Antminer S1

If I decide to go with either option, would I be alright?
Thanks so much! Best regards, AlextheBitcoiner

[Tikii]

I currently do Option 2. And everything works fine.

[Pcpoet]

I use 850 watt for two and it's been working fine .

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[pbj sammich]

If I decide to go with either option, would I be alright?

To answer your question, yes either option would work fine.

I would choose option 2 though (despite being more expensive), since you have multiple. If you go option one, thats 5 PSU's and 5 power cords to contend with etc...

[crazyates]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

[frankenmint]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

[crazyates]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

Yep, both of the recommendations I suggested were single rail. Those CX750s are only Bronze not Gold, they're not modular, and then ony have 62A available. They'll power 2 Ants, but not with crazy OCs, and you won't have much breathing room. Not a bad choice, but there are better if you're willing to spend just a few $ more.

[Littleshop]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

The CX750 is a good power supply.  That being said I would hesitate to use it for two overclocked ants.  That is a little tight and it may not last as long.  It would be fine with non-overclocked.  The 850 is more expensive but a better choice for two overclocked ants. 

[bitterdog]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

No way.
I have 2 overclocked @375 ants on a 850w corsair tx850 pulling 824 watts with a extra 120mm fan on each

[GordonBM]

I run 3 overclocked S1's on 2 RM750's.
Not a single problem.

[jeppe]

I would recommend dell server psu as they are very efficient. They are also cheap like 10£ on eBay some cables and no need for pcie connectors just use the other connector. So now us have a server grade psu for 10£. All my ants use this setup.
Good luck,
JT

[Equate]

Option 2 is better than the option 1.

[bbxx]

http://www.alternate.co.uk/html/search.html?query=lepa+800&x=0&y=0

808W from wall at 2 375 ants

no problem,

got few of them for sale

asking 80$ each

or xfx bronze 850W one rail

100$ each

shipped from EU to EU

orginal boxes

shipping 20$ /unit

[bittawm]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

so this cx750 can run 2 ants??? isnt power draw like 800watts

[jamesc760]

You can put 2 Antminer S1's on one 750Watt, stock clock. If you want to OC your S1's, then you will need the 850W Corsairs at least.

[fractalbc]

I just ordered five Antminer S1 units and I have some questions regarding the "Best" power supply (PSU)

Option 1). A single 500 watt power supply dedicated to one Antminer S1
Option 2). A single 850 watt power supply dedicated to two Antminer S1

If I decide to go with either option, would I be alright?

You will be all right with either option.

I would pick the one that is the least expensive over the life of the project.  That is : cost of supply + cost of electricity - convenience factor of single vs multiple supplies - resale value of supply

Every time I give in and work this out for someone they always come back with "but I live in Brazil and can not get that brand and my electricity costs ...".

A short summary is that in my experience, running the numbers, you are better off with one supply per miner up to about 3, maybe 4 S1's, at which point you save money by learning how to use server power supplies.  The exact cutoff varies bases on your knowledge of electronics and where you live.  The "n+1" load balancing server supplies really are the way to go for more than a few units.

[herebittybittybitty]

I just bought a Corsair RM1000 to power 2 overclocked S1's. Is this overkill?

[pmorici]

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

No way.
I have 2 overclocked @375 ants on a 850w corsair tx850 pulling 824 watts with a extra 120mm fan on each

The wattage rating of a PSU is typically  the _output_ power when you are measuring using a kill-a-watt you are measuring the input power.  A typical supply like the CX750 is 80% efficient so at full load you would expect a kill-a-watt to read 750 / 0.80 = 937.5 Watts  the CX750 is definatly right on the edge when fully loaded but still slightly under its rated capacity.  That said I sold all my ATX supplies and replaced them all with server supplies like the HP DPS-800GBA, like half the price or less for 100 Watts more power and equal efficiency.

[Thyatis]

http://alturl.com/sfgdn
Corsair RM Series 850 Watt
is the best commercial one i have found

[J_Dubbs]

Remember that you can't just go by the watt rating alone.

This PSU is technically 850W, and it has enough PCIe plugs to handle 2 Ants, but there are some major issues! First, load balancing the rails would be a giant PITA. Second, I wouldn't guarantee the quality. And third, and most importantly, it can only handle 720W (60A) for all of the 12v rails combined. This is barely enough to handle the 2 Ants at stock, and you wouldn't be able to OC at all. Consider this a PSU to stay way from.

On the flip side, you have this PSU. Same max wattage, same number of PCIe plugs, but it's a strong (70A) single rail (no load balance, and no OC limits), and it's by a more reputable company. You could easily handle 2 Ants on this PSU with no worries.

If you really want something that's simple amazing, try this PSU. It's very similar to the one above, but is 92% efficient (80Plus Gold), and is completely modular. You would be hard pressed to find a better PSU for 2 Ants.

In short, don't skimp on the PSU. It has the ability to make your mining ventures a constant pain in your neck, or it has the ability to make your rigs completely rock solid.

If you shop around you will want a single rail IMHO.  After messing with a TON of options, I nailed it down to CX750s. One can power two overclocked antminer S1s

No way.
I have 2 overclocked @375 ants on a 850w corsair tx850 pulling 824 watts with a extra 120mm fan on each

Interesting... I've got 2 Corsair TX850w PSUs but I thought they would only handle 3 Antminers between the two of them. I'll have to try this out when they arrive. Can you post a picture of your setup?