Can any hardware guru please check if those pieces are fine together?
I did my research i just wanna make sure

SEMPRON 140 2.7GHZ
Gigabyte GA-890FXA-UD5
Kingston 2GB DDR3
SAMSUNG X22 DVD-R
Western Digital 320GB
Antec TruePower Quattro 1200W
SAPPHIRE 69502G DDR5 x 4
COOLER MASTER CM690



[secondary question: What pool do you suggest working at?]
Thank you.