Superb 550P is a decent low-end 450 W unit if you pull between 180 W and 270 
W from it, when its efficiency touches 80%. On other load patterns, however, 
efficiency is too low, preventing us from recommending this unit.

Another thing that counts against this unit is Gigabyte labeling it with its 
peak power. This, by itself, we think should be illegal everywhere in the 
world. And to make things worse we couldn’t pull 550 W from it.

Superb 550P is far from being superb and it is too expensive for what it is. 
For example, you can buy an OCZ StealthXStream 500 W for less and get a far 
better performance.

http://www.hardwaresecrets.com/article/Gigabyte-Superb-550P-Power-Supply-Review/968/1


"Andrius" <tuchka@tiltas.lt> wrote in message 
news:iir7p5$8di$1@trimpas.omnitel.net...
> Konkreciai sitas variantas 
> http://www.1a.lt/pc_komponentai/maitinimo_blokai_psu/?adv_s=1&opt0=2920569.2920589&x=36&y=5
>
> CPU AMD Phenom X4 955
> Video  GTX460
>
>
>