PC upgrade

Hello

So im thinking of upgrading my hp slim line

CURRENT PC
Computer type PC/Desktop
System Manufacturer/Model Number HP
OS Windows 7 64Bit
CPU Intel (R) Core (TM) 2 Duo CPU 2.80GHz
Memory 4,00 GB
Graphics Card NVIDIA Geforce GT 220
Monitor(s) Displays Samsung
Screen Resolution 1280x1024

Im looking at this:
Processor: pentium g3450
Ram: 4 gb kingston ddr3
motherboard: Gigabyte h81
Hard Drive: Western digital 1 tera green
graphic card: inter hd 4400
For 200 €.

Wold that be a good PC ?

Slim PC cases, especially custom PC vendor cases, do not make good upgrades. If you are going to upgrade, also get a new full size case. The extra cost for a new case will be minimal.

4GB is relatively small. If you want to use a 64bit OS you want more than 4GB of RAM or you can't take advantage of a 64 bit OS (and a 64 bit OS uses more of the memory than a 32 bit so you will have less for programs).

I like the case but they arent so expensive so buying a nother one wont be a problem.
How much ram would i need to run a 64 bit version ?

I don't know how much RAM, but the main reason for having a 64 bit OS is that it will address more than 4GB of RAM.

That`s not really an upgrade.

You want at least 8 GB ram with the ability to upgrade to 16 someday.

Thank you both for your replay.
So i went ahead and bought it. with it a new case. its runing great.
as for ram. to be honest i dont really dont that much. i dont play games (maybe i will some day again) but for now i only need my PC for web surfing, listening to music, movies etc.