HelpNeed Advice For Gaming Setup.

Hello. I hope this is the right section. I have only serisouly played a few games in my day. (I get into one game & usually stick with it) Halo2 - RIP Runescape ( RIP IPO) - CS 1.6 & now I'm getting into CSGO. My laptop has done fine for RS & 1.6, but now I have come to the conclusion upgrading is a must. I need a 120 or 144 hz monitor. How much better is 144 than a 120? My friend has offered his tower for $200.00 with these specs:
ATI Radeon HD 5600 Series
ATTI Tech
ATI display adapter
Internal DAC 400MHZ
1920 X 1080 32 bit 59 HZ
PnP Monitor
1TB memory
4 gigs Ram.

Will these machine take advantage of 120 and/or 144 to it's max potential or am I better of building my own tower. If I should build my own tower, what are recommendations / what is vital for CSGO particularly. That's all I intend on using it for besides basic Microsoft office & Eclipse usage. Also - How much does a T1 connection or a personal server connection benefit CSGO play? Thanks for any input in advance.

Well, to be honest. If you have the money to buy you're own tower. Then go ahead and do that. But please include some more info.

- How much are you willing to pay?
- Are you only gonna be playing CSGO? Or any higher demanding games?
- Are you going to be streaming? Rendering Video's?
- Lastly, are you going to be OC'ing? (Over Clocking)

Hope to hear from you.