Database Server

Hi Guys
Please give me some advice....... I have an option to purchase one of two servers for our database server:
3x 80GB 10000RPM drives in RAID0 array (210 Gb)
2x 3Ghz CPU's (Quad Core, 2MB cache)
Front Sata drive loading bay (8 Drives in front bay, 2 open slots)
CD/DVD Writer
1500w power supply (3x 500w PSU's)
Adaptec RAID 0 controller
6GB Registered ECC memory
SuperMicro Wind-Tunnel Cooling
or
IBM Eserver xServer236 series
Dual P4 3.6 GHz Processors
4 GB RAM
6 x 76gb Hot Swappable scssi drives
2x Gigabit Ethernet adapters
IBM raid controller RAID
DVD Rom
Integrated Lights-Out
ATI RAGE XL PCI graphics
2xRedundant power supplies
or
Should I simply go for a normal pc (not server) based Core2Quad with LSILogic SCSI and enough memory?
I know some of you are running huge setups and I am just wondering if real servers are necessary or whether a normal pc with the correct specs will do just as well? It is obviously a huge cost implication as servers are so much more expensive.
My setup will be 160 seats outbound with full recording in wav at a dial ratio of 3:1.
Please give me some advice....... I have an option to purchase one of two servers for our database server:
3x 80GB 10000RPM drives in RAID0 array (210 Gb)
2x 3Ghz CPU's (Quad Core, 2MB cache)
Front Sata drive loading bay (8 Drives in front bay, 2 open slots)
CD/DVD Writer
1500w power supply (3x 500w PSU's)
Adaptec RAID 0 controller
6GB Registered ECC memory
SuperMicro Wind-Tunnel Cooling
or
IBM Eserver xServer236 series
Dual P4 3.6 GHz Processors
4 GB RAM
6 x 76gb Hot Swappable scssi drives
2x Gigabit Ethernet adapters
IBM raid controller RAID
DVD Rom
Integrated Lights-Out
ATI RAGE XL PCI graphics
2xRedundant power supplies
or
Should I simply go for a normal pc (not server) based Core2Quad with LSILogic SCSI and enough memory?
I know some of you are running huge setups and I am just wondering if real servers are necessary or whether a normal pc with the correct specs will do just as well? It is obviously a huge cost implication as servers are so much more expensive.
My setup will be 160 seats outbound with full recording in wav at a dial ratio of 3:1.