>> PSU - bent 600, o dar geriau 650.

> Kuom remiantis? Jei psu calc sako, kad reikia 400w. Kam gali reikėti dar +250w psu?


https://www.techpowerup.com/reviews/Sapphire/RX_580_Nitro_Plus/28.html
Tarkim is RX580 imanoma islupti ~240-250W

i5-8400 tipo 65W TDP, taciau siaip ziureciau, kad sitas ar
upgr. CPU, jei rimtesnis su visokiais Turbo Boost'ais gal ir kokius ~100W suesti gali..
https://www.anandtech.com/show/11859/the-anandtech-coffee-lake-review-8700k-and-8400-initial-numbers/5
The Core i5-8400 is rated at 65W, and consumes only 49.3W at full load, of which 41.7W is from the cores.
That leaves 7.6W on the table for the uncore and memory controller

Tipo i5-8400 vos 49,28W (gal be GPU dalies).
Palyginimui Ryzen 5 1600 - 65W TDP rodo 70,80W (t.y. ~21,5W daugiau)

kitam review:
https://www.techspot.com/review/1502-intel-core-i5-8400/page4.html
sistema full load su i5-8400 tipo eda daugiau nei Ryzen 5 1600..

Kitas dalykas PSU efektyvumas matuojamas prie [10%] / [20%] / [50%] / [100%]..
Geriausias paprastai prie ~50% ..  tai netgi tuos ~ 300-400W
galima sakyt geriau tiek lupt is 650W PSU, o ne 550W PSU.

Skirtumo ~12 Eur uz 550W->650W:
http://www.skytech.lt/search.php?keywords=rm550x+%7C+rm650x
Kad jau ziuri RMx'a, taigi ten pasyvumas iki 40% load'o

Ziurek su 650W dar ir pasyvu susipaisyt gali prie vidutines apkrovos..
https://www.corsair.com/corsairmedia/sys_master/productcontent/corsair-psu-spec-table.pdf
650W * 0,4 = 260W .. arba 550W * 0,4 = 220W ..