How to pronounce 金牌 in Cantonese (7 out of 9):

是一個 850W 80 Plus 金牌全模組火牛
It's a 850W 80 Plus gold medal full-module fire cow.

Cantonese Sentence Breakdown

si6
is
一個 jat1 go3
a; one
金牌 gam1 paai4
good quality
cyun4
all
whole
entire
every
complete
perfect
a surname
模組 mou4 zok3
module
火牛 fo2 ngau4
(noun) an AC adaptor; an electric transformer; an electrical ballast