Topic: Can ASICS kills power supplies? (Read 1557 times)

They do, but that' usually rated for the amount a supply can safely provide, not the amount an individual miner is rated to take. ATX supplies will usually crowbar at around 700-800 watts per rail, large PSU supplies could source 3,000 watts or more per rail (and putting AGM batteries on the 12 volt rails to provide simple UPS ability could raise that to 60,000 watts per rail or more).

C

I have used soooo many psu's I lost track.

if the gear is pure asic  and needs 12.0 to 12.4 volts server psus are better.


the best server psu with 1 fan mod  is the ibm 2980  not the ibm 2880  it gets true  platinum 93%  as long as you stay under  2600 watts and can do 2900 watts

Right now as I type  I have one running 2 avalon 7's

the next best  server psu is the dps 2500

it will give true gold  91% at 2000 watts and can do 2300 watts

of course  both are a shit ton of watts.

I have used 50 different ATX psus
and some can not do 75% of rating 24/7/365  some can

Since I have 13 pc's mining alt coins with gpus  all use plat or titaniam atx at about 60%

Rosewill quark plats  are good for 60%  24/7/365-------- great sales  right now a 550 watt for 69.99

http://www.newegg.com/Product/Product.aspx?Item=9SIA07234S8693

modular  and will mine 2 rx 480 gpus

evga p2's are good
evga t2's are better   but cost a lot
evga g2's are good

seasonic prime titanium are good but cost a lot
I melted seasonic plat
I melted seasonic gold

corsair plat AX Series AX760 good


all silverstone   titanium are mediocre they  dont quite get the titanium rating  unless you are 50%

that is the 600 700 and 800 models


At the moment when I get an atx I look for a good deal on evga p2 and or rosewill quark

When I go for servers  I like dps2500 and ibm 2980

I buy Finksy/j4bberwock  or optimizer breakouts

Ok so ATX supplies have fused supplies to the miner and server psus don't?

The plugs have fuses in though 

The problem with using large commercial supplies on miners is that a normal miner is probably rated to handle 30-40 amps per PCIe plug. If you hook it up to something that can supply 100-500 amps then you run into a situation that if the miner shorts the result is the power supply will happily feed power into the resulting little plasma ball as opposed to crowbarring and shutting down.

I've repaired miners like this, the result are pretty wild. The proper way to do it is to put a fuse inline with each supply line going to a miner. That way if a miner shorts you blow a fuse and not a fire.

I've had great luck with the Corsair 500 and 750 series, the only issue with the M's is that the plugs at the power supply can get a bit warm with heavy use. But the only one that failed was a 750 that was caught in my shed during a Churriguera when the door blew open and it got soaked. The others survived.

C

I fully appreciate what you're saying about kits but I don't need that much power and can't use that much either. I'm trying to keep within the sweet spot for efficiency of the psu. Hence why I've only bought a dps1200 platinum. Well two of them one to experiment on and another to use. Already found the voltage adjustment on it.

Everyone keeps saying this, but forgetting the kits finsky and others sell
Dual dps-2000 can give you 4000WATTS and is essentially silent.
you can put 2 or 4 120mm fans of your choice on them EASILY and push what ever amount of air for which ever noise level you select, without issue.

And they are cheap to replace, so having spares sitting around for when one drops offline is a no brainer.

Hence my thread tying to devise a way to make them quieter

In reference to the ATX vs Seever psu, I'm currently making the switch to a server psu. Primarily because of the cost of it compared to an ATX and secondly because of the reasons listed above.

My current EVGA 1000w P2 is drawing 650w at the wall so roughly at peak efficiency but the voltage has dropped to 11.93v. With the server psu I'm able to adjust the voltage underload so provided a true 12v to the S9 I have.

I got some cheap Corsair 750W/Thermaltake 850W/Revolion 87+ PSUs that are running for 3 years straight without any issues.

However I usually run them at 80% load or less.

Only issue I had was with those modular PSUs which split into 2 PCIe connectors and if you drew close to 150W each on each connector, it drew 300W at the modular side and had some melting issues there.

With GPUs you shouldn't have any issues with those but they aren't good if you are pulling the entire 150Watt from each connector.


https://i.imgur.com/dOS17tM.jpg

Was more to fill the gap than throw out the previous recommendations.

12.04~ ish, they dont budge much at load, +- 0.02v, And that may just be the multimeter i use. These PSU have 10years warranty, i've been using the f out of them for years(often at TRUE DC 100% load), its a love story. These are EVGA G2/P2/T2. I pity anyone that get cheap ATX PSUs, it seem a lot of people cheap out on their ATX PSU, pay the price, and are better told to just not do it. Thats not ATX PSUs as a whole , dont give me dearie a bad name! But i do have hard reasons to use ATX, and its not to save money lol.

 

Virosa, I don't doubt your experience one bit.  We're making broad generalizations here, and generally speaking ATX PSU's don't last as long or as consistently as server PSU's at any level of load in my and most others' experiences (hello S2 PSU's!). You are definitely right that quality goes a long way, but you pay dearly for it.  Also, ATX PSU's are typically built for peak draw demands and aren't expected to operate at over 90% load for extended periods of time. Server PSU's are designed to operate in steady states of load, and I imagine even in server settings that load level is expected to be considerably higher than that of a typical PC. It's about intended usage.  Just out of curiousity, what is the voltage at the plug that your ATX PSU puts out under 100% load? In my experience the voltage starts to drop off above even 50-60% load. I wouldn't be surprised that @ 100% you are at or even slightly under 12.0V.

One thing ATX PSU's have as an advantage over server PSU's is their fans/cooling and resulting ATW efficiency.  80+ efficiency ratings do not take fan draw into account, and since ATX PSU's aren't as restricted in form factors as their server counterparts, they can use lower power fans to manage similar wattage ratings.

Indeed, but as fuzzy surmised I already have the psu and so it goes...
Thanks all for the input. Mine on!

My 1600w PSU does 100% 12v just fine. Its rated for 1599.6w on the single 12v rail. Don't buy a shitty ATX psu and you will be plenty fine, minus the 300% markup/watt versus a server PSU, that is.

Not ideal but if you already have the PSU then it should do well and be in its sweet-spot for efficiency. Again, even the high-end ATX supplies are not made for supplying only 12vdc at rated wattage. Part of that rating includes a couple hundred watts of 5v and 3,3v power expected to be used by CPU's, memory, etc. Throw in the usually too-thin PCIe cables used, the price of ATX supplies, the fact that many high wattage ones have 2 or more 12v rails vs a single one, and things are not good.

Hey Fuzzy, Fin,
I really respect your opinions.  What would you say to using a 'high end' consumer psu - one listed above - running at most 60% of max load instead of 80+%?  Like a 1600W psu running a 900W miner?

+1 on everything, especially the last line.  There's not a make of off-the-shelf ATX PSU's, even EVGA, that will stand the abuse of 90+% load in hot ambient temperatures to the extent that nearly any server-grade PSU will. Some better than others, perhaps, but even ignoring the obvious $ for $ comparisons, server PSU's will stand up to harsher more demanding environments, and the voltage output is considerably more stable with load.

The jab @ being made in China is pure wrong considering all of the IBM, HP, Dell, etc server supplies are sourced from China. A crappy PSU can be made anywhere. Just depends on what the customer (IBM, HP et al) specifies it's performance, lifetime, design max operating conditions, etc to be and how thorough the design testing called for is.

If the customer tells the likes of Delta (the major supplier of IBM & HP branded server PSU's) to make a marginally rated PSU for them they will be more than happy to do that. Tell them to make it bulletproof and they will do that and do a damn fine job of it.

Frankly, for mining the only PSU's I steer clear of are all of the Consumer grade ones -- even the best of them such as Corsair, Thermaltake, Lepa etc. They just are not made for the operating envelope that miners require.

chinese psu surely will burn first, but a good psu should automatically shutdown when you exceed the maximum power that cna be handled by your units

i tried to go above the maximum power rated on my psu and the system reboot, this was tried with gpu rig

it should work with asic too, but maybe with asic it does not work because you have not an entire pc connected to it, not sure about this

but i remember some pcie cable fried(here ont he forum) because someone exceeded the power a single rail

miner will not kill it directly
But anything used at a heavy load for long lengths will be at risk of dieing.

server grade psu's are better equipped for it.
but none are really meant to be run even at 80% for months on end...

Thanks.  It was only on the S1.  I really think I may have killed it with overheating.  It's good to know it has a limit at 800w at 110vac as there is that temptation to use the two other plugs it has.