Need help to buy other hardwares

[Airbag]

Sallam Alikum

Yesterday I bought MSI-925X-nEO platinum, CPU 3 GHZ BOX800, WD 300 GB SATS.

So can you tell me if there any problem with these hardwares between them and I have already box is Discovery and it has two fans.

It has Pwoer Supply and the model is DPS- 1801 ATX-400W-P4.


Can you help me to buy the best kind and biggest size the RAM and Video & Sound Cards.
And tell me if I have to buy somethings good for my New P.C
I dont care the money.

Thank you for reading my letter .

BR
M?

[Airbag]

Please help me ???????????????????????????????????