My PSU is
CoolerMaster eXtreme Power Plus 350W
Type Intel Form Factor ATX 12V V2.3
Dimension (W / H / D) Standard ATX 150 x 140 x 86 (mm)
Input Voltage 90 ~132V/180~264V (Selectable)
Input Current 8 A @ 115Vac / 4 A @ 230Vac
Input Frequency Range 47 ~ 63 Hz
PFC None PFC
Power Good Signal 100 ~ 500 ms
Hold Up Time > 17 ms
Efficiency 70% Typically
MTBF >100,000 hrs
Protection OVP / OUP / SCP / OPP / SCP / OLP
Output Capacity 350 Watts
Operation Temperature 0~40 ℃（Nominal Input Voltage）
Safety CE / BSMI / FCC / C-tick / GOST
Fan 120mm silent fan
Connector 24pin Motherboad X 1
4 Pin+12V CPU X 1
8 Pin+12V CPU X 1
S-ATA X 2
4 pin Peripheral X 5
4 pin Floppy X 1
I have 100$, since I 've created this topic, I 've learnt alot about graphics card.
Thanks you all , again.
And I decided to buy Ati hd4670 for my old pc.
But the new problem is : which brand?
At my location, there is only asus, gigabyte, msi, his . 1Gb version and 512 version. What is the best ?