Emanuel Berg writes:
Unfortunately the motherboard was worst-case 166.2 W, not the previous estimate/approximation at 80. The 166.2 (motherboard W really doesn't include the CPU?)
It does, see https://www.techporn.ph/wp-content/uploads/ASUS-ROG-Strix-B450-F-Gaming-Benchmark-1.jpgwhich is from your reference iv and explicitly shows an AMD R5 2600X processor being used.
So no it says it is is worst-case 277 W, and with +30% wiggle
room it is 361 W :(
back to passive 400W I guess ...
device model/category max W note ref
-------------------------------------------------------------------------
CPU AMD middle end, 4 cores 65 exact [i]
fans 80 mm (3K RPM) 9 3*3W = 9W
120 mm (2K RPM) 12 2*6W = 12W [ii]
GPU geforce-gt-710 19 exact [iii]
mb Asus ROG Strix B450-F Gaming AM4 166.2 exact [iv]
RAM ~DDR3 (1.5V) 3 actually, a DDR4
SSD 2.8
-------------------------------------------------------------------------
total:
(ceiling (+ 19 65 (* 3 3) (* 2 6) 166.2 3 2.8)) ; 277 W
with +30% wiggle room:
(ceiling (* 1.30 (+ 19 65 (* 3 3) (* 2 6) 166.2 3 2.8))) ; 361 W
[...]
[iv] https://www.techporn.ph/review-asus-rog-strix-b450-f-gaming-am4- motherboard/
[...]
May I suggest you to compute it differently as follows?
device model/category max W note ref
-------------------------------------------------------------------------
CPU AMD middle end, 4 cores 130 2*65W [i]
fans 80 mm (3K RPM) 9 3*3W = 9W
120 mm (2K RPM) 12 2*6W = 12W [ii]
GPU geforce-gt-710 19 exact [iii]
mb Asus ROG Strix B450-F Gaming AM4 80 previous estimate
RAM ~DDR3 (1.5V) 10 actually, a DDR4
SSD 5
-------------------------------------------------------------------------
What did I change:
* CPU power doubled to account for short-time bursts.
* Motherboard back to 80W which should still be a safe estimate.
* RAM upped to 10W and SSD upped to 5W (depending on the actual components,
you might want to revert that but computing an SSD with 3W makes your
entire calculation dependent on that specific model and if you upgrade
that later you'd have to take it into account).
Sum = 130+9+12+19+80+10+5 = 265W.
With +30%: 265*1.3 = 344.5W
Hence it would be suggested to take at least a 350W PSU. Use a larger one if
you ever plan to extend the system.
HTH and YMMV Linux-Fan öö
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