Doubt about compatibility

[Galadh]

Hi,

I'm about to buy the new graphic card, power supply and add some RAM and I'm a little bit concerned about compatibility.

MSI K9N NEO V2 MS-7369
-> is what I have

MSI GeForce GTX 460 Cyclone OC 1GB DDR5
OCZ Stealthxstream 2 500W
2GB DDR 2 800 MHz Goodram
-> is what I will buy

1. Is there any thing like "power supply compatibility" to be considered nowadays? I guess most of them fits in every regular PC? I do know it may be silly question.
2. Does mentioned GPU fit MSI K9N NEO V2 MS-7369?
3. Right now I have 2GB 800 MHz DDR2, dunno which producer. a) Is buying Goodram 2GB generally fine with any? b) Does Goodram fit MSI K9N NEO V2?

 

[Maziar]

Hello and welcome to the forums
1)Not for almost all of today's cases but read the "supported PSUs" in the specs of the case you're considerng
2)Yes
3)It's recommended adding the exact RAM that you currently have,but since you don't know the brand,then you have to get a new 4GB RAM