What are the safe operating watts for a power supply?

ccccccc7

full member

Activity: 223

Merit: 100

This image pretty much sums it up, however, it is fairly old now (you could probably find an updated version somewhere)

Stay away from poor quality PSU, the wires will melt and you will run into all kinds of problems.

I got an 1000w Aerocool PSU which cost over 100GBP and the 8 pins melted on both ends within a few months and I had undervolted with at least 300w clear of 1000w...

grape_tectonics

newbie

Activity: 56

Merit: 0

I didn't tell them to drain 1500w from a 1000w rated PSU, I was explaining why 1000w from a good 1000w psu is not a problem. If they go and overload their PSU's anyways, well.. there is the darwin award Cheesy

xxcsu

hero member

Activity: 1498

Merit: 597

please dont start to tell new members they 1000 watts psu can delivering 1500 watts load ... The link you posted here is a " Overload Tests" it might true for a short period of time , but not for a 24 hours / 365 day load ... and don't forget about efficiency ...

grape_tectonics

newbie

Activity: 56

Merit: 0

If a good quality PSU says 1000w then it is 1000w. Reputable PSU manufacturers overprovision their hardware and they can work 100% of the time at their max rating for years and accounting for capacitor degradation, lookie here for example http://www.hardwaresecrets.com/corsair-hx1000w-power-supply-review/8/ a brand new 1000w corsair can actually deliver 1500w+

Of course opposite is true for shitty PSU's, with a 1000w rated noname, you'll be lucky to get half that before it explodes.

Nebell

full member

Activity: 406

Merit: 104

Quote from: naykos74 on June 17, 2017, 11:18:18 AM

Quote from: Raz0rC0in on June 17, 2017, 10:59:05 AM

Make sure you use a good quality PSU.. None of that cheap Chinese crap thats out there and you will have no problems.

I think that all the PSUs come from China, even the good ones like seasonic.

Quality control. That's what makes the big difference.

ben8jam

full member

Activity: 196

Merit: 100

Cool thanks everyone, just want to play it safe. Only have EVGA power supplies. Running 2x 750w's at ~600W each and still need to reduce card draw, so should be good to go.

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: ben8jam on June 17, 2017, 09:03:00 AM

For a 1000W supply what is the max wattage you can run at full time?

1000watts plat would be at 100% if it reads 1086 watts at a k-watt meter

huh ? wtf?

simple 1000/.92 = 1086 watts

if it is an atx not a server I say do 80% rule so

1086 x .80 = 869 watts long term at a kwatt meter may be okay .

myself I never do that high

atx rating-----
1600 ---------- 1200 evga t2 p2 g2 100% success rate
1500 ----------- 1125 rosewill tokamak 100% success rate
1300 ------------ 975 evga g2 100% success rate
1200 ------------ 900 seasonic plat has failed with melting but evga 1200 was good
1000 ------------ 750 evga p2 cosair rmxi? rosewill quark good
850 -------------640 rosewill quark all good
750 --------------575 evga p2 all good

so of quality psu seasonic has melted more then once at decent power levels the others were good.

note for rosewill quark and tokamak are good.

naykos74

newbie

Activity: 3

Merit: 0

Quote from: Raz0rC0in on June 17, 2017, 10:59:05 AM

Make sure you use a good quality PSU.. None of that cheap Chinese crap thats out there and you will have no problems.

I think that all the PSUs come from China, even the good ones like seasonic.

Coin++

sr. member

Activity: 810

Merit: 444

2 golds advises :
80% max load.
80+ Platinium to save Watts and have less warm.

ZacsCustom

newbie

Activity: 7

Merit: 0

Well heres the thing, if you buy a bad quality PSU that's not 80+ rated you're going to end up with a fire and possibly melted mining rig parts.

In general the idea of how to mine efficiently is to make sure that your PSU is never above 80% max load, if it is, then your doing something wrong(The more the load, the less the lifespan and safety of your psu) think about it this way, electricity is shocking right? The more you have it running through a powersupply, the more it needs to control and dissipate that heat, you may think oh its good enough to keep cool and regulate that heat, but in reality running it near 100% max constantly for 24/7 is going to end up making it die faster, and your other parts as well..

If you have to, just end up buying two PSU's, never just use one PSU unless its a large wattage(But make sure its a good quality PSU, Platinum Rated or Higher from a trusted brand.) I recommend using Server PSU's.

But the Max I'd say for a 1000 Watt PSU, (Don't know if its 80+ or a good brand...) I'd say off the top of my head is 800 watts max, if that, I'd go lower if it wasn't 80+ rated or a good known brand.

Raz0rC0in

newbie

Activity: 1

Merit: 0

Make sure you use a good quality PSU.. None of that cheap Chinese crap thats out there and you will have no problems.

Vann

hero member

Activity: 1036

Merit: 606

Also platinum or better PSU's are more efficient and can handle a higher load than gold. On 120V if you are going to use more than 80 - 85% of the capacity, I would go with a platinum or better PSU. The higher efficiency will also save you money in the long run.

xxcsu

hero member

Activity: 1498

Merit: 597

Most power supplies hit their peak efficiency levels with loads in the range of 40 to 80 percent. Building mining rig to about 80-85 percent of a PSU's capacity is advisable to achieve maximum efficiency and stability .

So answer to your question : with 1000 watts rated psu i would go for around 800-850watts of total system power draw.

ben8jam

full member

Activity: 196

Merit: 100

For a 1000W supply what is the max wattage you can run at full time?

Topic: What are the safe operating watts for a power supply? (Read 645 times)