A curiosity.
I notice that the recommendation for the AI Max+ 395 motherboard power supply is “… a 500W or higher ATX, SFX, or FlexATX power supply to handle maximum peak load, though continuous load will stay under 350W.”
By contrast, the built Desktop power supply is “400W”
Why recommend 500W but supply 400W? As has often been the case, I’m missing something for sure?
The official Framework PSU is actually capable of 600W, but down-rated to 400W where it is more efficient. Most likely, the recommendation is to prevent people from buying cheaper 400W power supplies, which could be unsafe if the power draw on them is maxed out for any extended period.
Oh, that’s interesting @Morpheus636 thank you
Where did you get that info about the 600W down-rated to 400W?
Should be in this LTT video: https://youtu.be/-lErGZZgUbY?t=424
Excellent, thank you again @Morpheus636
I just got my 128-gb version motherboard running, with a 500 W full sized ATX power supply, seems to be working so far except for one issue. Under LM studio, most models work good, but when I tried a couple advanced settings (such as using speculative decoding which loads in multiple models), I experienced a sudden power off of the system. Would that be an issue with the power supply and a sudden demand spike? It is weird, because it acts like the power cord getting yanked (no OS crash, just complete power off). In this case the power supply is from about 5 years ago or so, could be marginal.
So now the sudden power off events have been happening more frequently – even just logging in triggers it. Initially if I played with the video settings in the firmware (pre-allocate 32gb for example), it would be stable for a bit, but now even that isn’t working. Works fine if I ctrl-alt-f2 to run under a text console, can run models from the command line, but just the simple act of logging in on the gui (or previously, when I was logged in, running firefox) would trigger the power drop.
So I borrowed the 1000-watt from my other system, and everything runs stable. I’m thinking that since the 500-watt that I’ve been using is several years old, probably isn’t able to handle the aforementioned micro bursts of power draw, I should put an update power supply in it – so just ordered a Corsair 650 watt, hopefully that will solve everything.