Topic: S1 PSU (Read 1625 times)

You're entitled to your opinion and you can resent thoughts all you want, but you couldn't be more wrong about server power supplies.  They are meant to be high efficiency, high workload, high availability.  A desktop PSU (and yes, gaming PSU's are desktop PSU's no matter what you call them) is meant to deliver a lot of watts, but is not extremely efficient.

I wholeheartedly recommend the Dell Z750P server PSU for the S1's, using the breakout boards you can find out there (just search dell 750 breakout board, you'll find them).  They will safely, reliably, run 2 overclocked S1's off of one power supply.  We have 26 S1's running off these PSU's at 393.  We had most of them up to and above 400, but we found that 393 was the best setting for performance and power draw.

Plus, if you have some zip ties and 10 minutes, you can set the units up very nicely to minimize cable clutter:

I've read a lot of misinformation on these boards and these statements are about as incorrect as you can get.  Server-grade PSUs are absolutely designed for intensive application.  They are absolutely built for 24/7 operation with no downtime.  They are purpose-built to be easily swappable in the case that they do happen to go down.

Tell the guys that run the Google data centers that their servers don't really run at high capacity.  Or the guys at Amazon.  They'll disagree pretty emphatically.

Unless you're playing your video games 24/7, you've never punished your gaming rig's PSU more than a mining rig would.  Even if you HAD played 24/7, you wouldn't have because the rendering of the game scenes and objects does not always require the same level of power supplied by the PSU.  I can guarantee you that if you throw a GPU mining rig together with the same components as you do a gaming rig, that mining rig will crash and burn first.

I understand you're entitled to think that, but personally I couldn't disagree more! They're exactly designed for 24/7 mission critical use. Most servers are not running idle. A fact the massive growth in cloud computing is testament to. When you think of all these idle cycles it's ignoring the fact that they're only on virtual servers, the actual servers powering the back end of this infrastructure are under demanding use. You might have each virtual server only used in bursts, but these virtual bursts add up to continuous utilisation of the real hardware layer. I can't remember the last time I saw an idle server that performed only one (or so) task(s).

I use Seasonic 550Watt Modular - Should be SSR550-RM

Modular is almost a must if you get more miners because non-modular is kinda messy...  I use my non-modular PSU's as spares.

They're on the expensive side (for most) at around $85 and will power 1 S1 for a 550 to about $110 for a modular 650.

However, I would recommend going with a 650 Watt PSU since the S1 Upgrade kits will come out in a couple of months.

Then you be pissed to know the 550's won't power those upgrades up because of lack of PCE-I wires.

I personally resent using cheap server PSU's; they're just not made for intensive applications.

I've installed many and people use them because they're cheap and have many spares.

Servers aren't usually running at full capacity 24/7...  Most regular data servers run idle most of the time; unlike Crypto-mining.

The home PSU's like Seasonic and Corsair cater to extreme computer gamers so are better suited the this application.

Trust me, I put my games through more abuse than a Bitcoin Miner ever could because video games fluctuate a lot more in speed

If you have the extra money, get a SSR650RM and you'll be ready for the upgrade kit.

If not, get a 550Watt PSU, I don't trust anything below 450Watt for the S1 and with the 80 Plus Gold cert, you save a bit on power.

The power supply will outlast the miner in both price and durability.

Overclocked an S1 is going to need about 400W.  I've been well served by Corsair and EVGA.  Personally, I'd go with the EVGA 1300 G2.  It can handle 3 overclocked S1s.

I would prefer not to have to mod the cases as its harder to get everything together, and time consuming to do, although I have got the tools, and ebay can add delays too. I would be happier buying equipment that has warranties and yes, I have free power whats the cheapest option of those PSUs that could comfortably run an OC'd s1? I've seen people on here saying that they have done so but I wonder for how long before it dies or starts a fire :/

Sounds like the Dell ones are the best bet for you. They're widely available cheaply on ebay, or Minersource has some in stock if you're american (post is expensive otherwise).

http://minersource.net/products/dell-750w-psu
http://minersource.net/products/delta-dps2000w-server-power-supply

You just need to invest a little time and effort into connecting them, as they're plug and play intended for dell servers. There are loads of discussions on the forums of how different people have done it, https://bitcointalksearch.org/topic/blade-serverpsu-ibm-2000w-dps-2000-modding-580185 Alternatively, sidehack in here sells his own customs adapters (and again, M/S above has some in stock on their site). https://bitcointalksearch.org/topic/for-sale-d750-750w-server-psu-breakout-boards-503423

They are really solid psu's and definitely worth considering if you're happy with how to connect them.

Unless you have free power (which you might considering you're using S1s) you should undervolt the S1s and possibly try to keep stock clocks.  That would cut down the power requirements enough that you can use something like a CX500 or run 2 of them off a 1000W unit.

im not bothered about noise, what are these dell server PSUs and breakouts?

I would prefer to overclock all of them, 10 in total.

Different PSU's are suitable for different uses. It really depends on your priority. For instance if you're not bothered about fan noise and just want to get cheap, reliable, decent supplies I'd recommend the dell server supplies and the break-out type adapters which can comfortably run multiple S1's per unit. If your priority is quite fans and gold efficiency regardless of up-front cost then I'd be pushing you toward Corsair. How many S1's are you thinking of running, will they overclocked or undervolted?

I have looked over all of the threads that I can manage but I still cannot decide on what PSUs to get for my S1s!!

I would like to overclock as many as possible and have 11 S1s on the way.

what can I run on the following PSUs? (normal & overclocked)

CX500
CX600
CX750
RM850
RM1000
XFX 550
EVGA 1300

Thanks for any help that I recieve