Please consider my server.
Dedicated Server - Performance Server
» Processor: Intel Core2 Quad 2.4GHz
» RAM: 8GB
» Primary Hard Disk: 320GB SATA
» Secondary Hard Disk: None
» Tertiary Hard Disk: None
» Quatenary Hard Disk: None
» Drive Controller: SATA / SCSI
» Operating System: CentOS (Recommended)
» Control Panel: Cpanel / WHM (Linux only) - $25.00 USD
» IP Address: 1IP (extra 4 with justification)
» Tier 1 Bandwidth: 1500GB (extra $0.50)
» Port Speed: 10mbps
» Reboot Panel: Remote Reboot Port
» Managed: None
» Remote FTP Backup: None
» Monthly: $314.00 USD + $50.00 USD Setup Fee
Upgrade to 10Mbps unmetered link: $100 / month
If it does not meet exactly what you want, you can build your ownserver here
Core 2 duo CPU:
http://www.hostton.com/dedi-performance.html
Dual Xeon CP:
http://www.hostton.com/dedi-highend.html