Pentium D Dual Core beats AMD in benchmarks. Intels run at lower temps but have a lower temperature before it burns up. AMD run at higher temps but have a higher temperature threshold. Honestly, I would use the Dual core. There is maybe a slight difference between the two.
Aspire X-Navigator Series
Intel 3.66 Ghz Dual Core
2x 1GB Kingston 4-4-4-12 Ram
ECS P4M890T-M2 LGA 775 M/B
Nvidia Geforce 7900GTO 512 MB PCI x16
Rosewill 700W PSU
Seagate Barracuda 250GB 16MB 3.0gb/s