How to determine the watts in PSU

Yes the DC wattage is the total wattage. It's split into different voltages to supply the various types of hardware in the PC. Read PSU101.

To find out whether your system's underpowered or not, could you post your system specs? There's no way to determine accurate values without an Amp Meter.
 
Model: FSP250-60GTA
Form Factor: ATX 2.03
Watts: 250W
Certifications: ATX 2.03 and AMD
Temperature range: Operating :0°C~50°C / storage -20°C~+85°C
Efficiency: 65% Min.,70% typical, at full load
Overload protection: 150% Max
Over voltage protection: +5V output : 6.5V; +3.3V output: 4.6V;+12V output: 15.5V
Fan: 80mm x 80mm with Noise Killer
Voltage : 95-132 VAC or 180-264 VAC switchable
Frequency : 47Hz to 63 Hz
Input Current : 10 amps maximum/115V, 60Hz
5 amps maximum / 230 V, 50Hz

DC Output: 250 Watt
Frequency : 47Hz to 63 Hz
Power Connections : One (1)- 20 Pin ATX System Board
Five (5) - 4 Pin Accessory (CD-ROM, Hard Drive)

Two (2) - 4 Pin Accessory (Floppy Drive, Zip Drive)
Click to expand...

That's the specification of the Power Man FSP250-60GTA power supply.

My PC is:
MOBO: Intel D865PERL motherboard
P4 3.0E ghz HT
768 MB Ram
ATI Radeon 9200SE video card
30GB HD

As stated in my last thread about CPU Overheating, Im wondering if this could be the cause of my latest problem (In the last post of the thread).
 
Well, it doesn't say your output voltage on the +12v, but i can fairly confidently say that you're prob not getting enough power...the main culprit would prob be your gfx card.
 
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