what is an ATX 1.3V PSU?

[HHBach]

I recently came across an ATX 1.3V powersupply (http://www.newegg.com/Product/Product.aspx?Item=N82E16817182010) and I was wondering whether or not it would work together with these parts

MOBO: GIGABYTE GA-MA78GM-S2H
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128090

CPU: phenom toliman 2.1ghz
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103254

RAM: A-data (2g at 800mhz) 240pins
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211272

Do this part seem to be compatible, or what the heck is an ATX 1.3V power supply

 

[TFT]

I recently came across an ATX 1.3V powersupply

It's an ATX V1.3 not 1.3V (volts). Certainly no good for your first link, it has no PCIe connectors.