Will 7750 or 6670 work on this psu?

[Evil234]

Nomak PX-450 ATX 12V
+5v:40A
+3.3:36A
+12V:21A
-12V:0.8A
-5V:0.5A
+5VSB:2.5A
Connectors:
4-Pin Square connector
20 Pin Motherboard connector
4X HDD/CD connectors
floppy Drive connector
http://static.kupindoslike.com/KME-CX-Y562-Nomak-PX450-Chieftec-9x9_slika_XL_3486605.jpg here is the label.. Im not exactly sure how to read it yet so i'd appreciate if u guys could tell me if i could use any of those 2 cards and if not tell me is there any other good card i could use.

Cpu:2.7 ghz
ram:2gb ddr2

 

[l89]

hd 7750 requires 16 ampere on 12v line and ur psu has 21 ampere u will be fine and get hd 7750 over hd 6670