Few questions about my motherboard compatibility

[Munez123]

Hello guys!
I was just wondering if anyone can tell me:
my motherboard number is P5B-MX
I currently have 2gb of DDR2 RAM, processor Pentium 2180, and Radeon HD 5450 512mb.
I was wandering if i could ADD 2 gb more of RAM and if i could put GTS 250 instead of HD 5450?

Thanks in advance for your support

 

[CountMike]

You can put GTS 250 regardless of amount of RAM on MB but 4GB of RAM will give you better OS performance.