RAM Compatibility Question

Hi all!

I was recently given an old computer and I am trying to improve the RAM of it.

Motherboard: Asus P5GC-MX
Current RAM (1 stick): Rendition rm12864aa5667.16fd
1GB DDR2 PC2-5300 NONECC DIMM

The new RAM I have and want to install 2 sticks of is: Kingston KVR800D2N6/2G

I would love your help in understanding if this is possible. I tried to install them and the monitor would not be recognised, and the computer did not beep as it usually does with the current RAM.

Thanks for your help!