How powerful is my PSU it doesn't have watts written?

Tsunami Chaser

Honorable
Nov 1, 2013
24
0
10,510
Right now my specs are :
Gigabyte H61M-S2P-B3 Motherboard
8 GB RAM at 1333 mhz
i7 2600 Sandy Bridge
2 TB Seagate HDD at 7200 RPM.
HIS HD 6450 2 GB.

So I plan to upgrade my graphics card to Palit GTX 660. So I read that it has more power requirement than HD 6450 so I checked my PSU. But the problem is it doesn't have watts written.
Instead it had it written in volts. It said 220 volts and some boxes below it with different amps.
It was 29 amp 18 amp 30 amp 0.5 amp and then 2 amp.
I am confused about my PSU also my other question is can I connect GTX 660 directly to my motherboard without putting additional wires from PSU because my HD 6450 doesn't have any wires connected to PSU its directly connected to motherboard.

PS : 220 volts and then the amps were written in power output.
 
Somewhere on it you should find a sticker like this
chieftec3.jpg

The number you care about is directly under the +12V label, in your case i would suspect it is the 29A or the 30A, either way you have only up to 360W of 12V capacity which is not much considering that a GTX 660 wants ~140W, your CPU will want ~100W, and a normal system wants 50-100W for the Motherboard/drives/fans, so that puts you pretty close to your limit. If you step up to a good 550W unit with 40+ amps available between the 12V rails you can run pretty much any single card setup, a 750W will run most dual card setups, and a good 850W will run any dual card setup.
 

jay2577

Honorable
Do you have a torch or a camera with a flash?


 

Tsunami Chaser

Honorable
Nov 1, 2013
24
0
10,510

Yes I do but even with camera flash its too dark. But I am pretty sure its 450 watts if its not I will buy another PSU. This one is just months old my old's fan stopped working.