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Title: PSU max load Post by: Regolin542 on February 08, 2018, 12:23:43 PM 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
Title: Re: PSU max load Post by: mombay on February 08, 2018, 12:33:12 PM 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
Title: Re: PSU max load Post by: Turkish88 on February 08, 2018, 12:42:58 PM Very high load, it is risky. PSU after using for long loss their power because capacitors dry up
Title: Re: PSU max load Post by: X299 on February 08, 2018, 12:45:12 PM PSU have their peak efficiency on 50% - 70% load.
I recommend you stay between these values. Title: Re: PSU max load Post by: swati007 on February 08, 2018, 12:48:42 PM 90% load is high .. keep it below 70% i think
Title: Re: PSU max load Post by: Regolin542 on February 08, 2018, 12:51:42 PM 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? Title: Re: PSU max load Post by: Yesterdam on February 08, 2018, 01:13:28 PM 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. Title: Re: PSU max load Post by: Riptide_NVN on February 08, 2018, 02:05:23 PM 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. Title: Re: PSU max load Post by: dalsoft on February 08, 2018, 02:16:02 PM 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 Title: Re: PSU max load Post by: whoismoses on February 08, 2018, 02:48:07 PM 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. Title: Re: PSU max load Post by: 2stout on February 08, 2018, 07:03:28 PM 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.
Title: Re: PSU max load Post by: philipma1957 on February 08, 2018, 08:45:57 PM 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. |