PSU max load

[Regolin542]

Hello. Is having 90% psu load safe while mining? I would like to add AMD R9 390 to my pc which already has rx 560 in it. I checked power load on be quiet site and it says that my pc will consume 481W, i have 500W psu and im not sure if its safe

[mombay]

That depends on the quality of your PSU. Top tier PSU would be able to handle that load, although I won't be using or recommend anybody to put that load into a PSU since you're going to lose the efficiency which most PSU have their peak efficiency on 50% - 70% load. Using 2 psu's instead would be a safer choice. Just my 2c

[Turkish88]

Very high load, it is risky. PSU after using for long loss their power because capacitors dry up

[X299]

PSU have their peak efficiency on 50% - 70% load.
I recommend you stay between these values.

[swati007]

90% load is high .. keep it below 70% i think

[Regolin542]

That depends on the quality of your PSU. Top tier PSU would be able to handle that load, although I won't be using or recommend anybody to put that load into a PSU since you're going to lose the efficiency which most PSU have their peak efficiency on 50% - 70% load. Using 2 psu's instead would be a safer choice. Just my 2c

Maybe if I undervolt it. Would that help?

[Yesterdam]

Very high load, it is risky. PSU after using for long loss their power because capacitors dry up

It depends on the quality of the PSU. For the OCZ 1250W, I run it at 70% capacity to get high efficiency.

[Riptide_NVN]

I've read you don't want to go over 80% generally.

If you're at or near that limit I'd be looking at upgrading the PSU.

[dalsoft]

I've read you don't want to go over 80% generally.

If you're at or near that limit I'd be looking at upgrading the PSU.

I agree with this advice 80%, also be aware of your PSU efficiency rating as it will have a bearing on your actual electricity costs over time
http://www.tomshardware.co.uk/forum/338726-28-differences-bronze-silver-gold-platinum-certificates

[whoismoses]

Consumer PSUs are not meant (not made for) to be run at 70-100% capacity 24/7. That said it doesn't mean they won't. I try not to do that. For example, for my 900 watt systems I generally use 2x 750 watt power supplies.

Also, at 90% capacity you will use more electricity as they start to lose efficiency when you pass 50-70% <- I admit I don't know the exact number.

I highly recommend you (and everyone) install a smoke detector close to their rigs just in case anything goes wrong.

[2stout]

The best answer is a 2nd PSU.  Until you get another one, may want to decrease TDP on the GPUs so you are not over 400W.

[philipma1957]

Consumer PSUs are not meant (not made for) to be run at 70-100% capacity 24/7. That said it doesn't mean they won't. I try not to do that. For example, for my 900 watt systems I generally use 2x 750 watt power supplies.

Also, at 90% capacity you will use more electricity as they start to lose efficiency when you pass 50-70% <- I admit I don't know the exact number.

I highly recommend you (and everyone) install a smoke detector close to their rigs just in case anything goes wrong.

Every atx I run at 80 % or higher dies young two or three years not five or seven or ten years like their warranties are.