Server specs/linux question

[doombunny]

Hey i just wanted to ask a few questions, first off, Whats the BEST Linux version to run off, I'm planning on getting Ubuntu Server Edition (32 bit, because i heard for 64 bit you can't achieve 1000fps for css)

is there anything better?

and are these specs good enough for a server?

Condition: New
Operating Systems: Not Included
Form Factor: Tower
Processor Brand: Intel®
Processor Class: Pentium® Dual Core
Processor Number: E2180
Processor Speed: 2.0GHz
Processor Interface: Socket 775
Processors Supported: 1
Additional Technologies: Intel® Extended Memory 64 Technology, Dual-Core
Memory Type: DDR2
Memory Size: 1 GB
Total Memory: 2 GB
Memory Speed: DDR2 667 (PC2-5400)
Memory Slots (Total): 2
Memory Slots (Available): 0
Maximum Memory Supported: 4 GB
Compatible RAID Levels: 0/1
Total Storage Capacity: 250 GB
Number Of Hard Drives: 2
Hard Drive Size: 250 GB
Hard Drive Interface: SATA-300
Spindle Speed (RPM): 7200
Buffer Memory: 8 MB
Optical Drive Type: DVD-ROM
Communications Description: Integrated LAN
Interface Type: RJ-45
Data Transfer Rate: 100 Mbps/10 Mbps
Power: 585 Watt

hehe, i got it straight from the website >.< all for about $650

is this a good "starter" server, cus i've never owned a Server Server before, i've owned plenty of game servers and ran srcds plenty of times but never this.

Anything you can recommend/any suggestions?

thanks in advance.