Wattage

Amperage.

should be around 30 , the AGP port can draw maximum 50 watts.

About 250 Watts. Check this out to see if it helps.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

FX5200 - less than 50 watts by itself.

Total power consumption of a "budget" system using such a card - 250 watts max.

One of my systems has an OC'd Q9550, 4 GB RAM, a GTX260, a Gigabyte EP45-UD3P motherboard, 3 hard drives and an optical, and a Soundblaster card all powered by a Corsair 750TX.

Running 3 instances of Prime95 to load the CPU and 3DMark06 to load the GPU, it pulls 375 watts from the wall as measured by my Kill-a-Watt meter. Figuring 80% efficiency, the system only pulls 300 watts from the PSU.

For a system using a single GeForce FX 5200 graphics card NVIDIA specifies a minimum of a 250 Watt or greater power supply that has a combined +12 Volt continuous current rating of 18 Amps or greater.