Which version of Windows can I run?

[nightrider1470]

Celeron cpu. 4GB Ram. 960 graphics card.

This is a Htpc build.

Can I run Windows 7 or 8

 

[nightrider1470]

Intel BX80637G1620 Celeron G1620 Dual Core CPU (2.70GHz Processor,

??

 

[nightrider1470]

Thanks!!