Which one of this system best n stable?

Question

Which one of this system best n stable? Thanks in advance..

HP Compaq nx6325 Business Notebook PC
Genuine Windows XP Home; AMD Turion™ 64 X2 Mobile Technology TL-50 (1.60GHz); 15" colour XGA (1024 x 768 resolution); 60GB (5400 rpm); DVD/CD-RW Combo Broadcom NetLink Ethernet PCI Express Controller (10/100/1000 NIC), Integrated 802.11 a/b/g, Bluetooth 2.0+; 512MB (1 x 512MB) DDR2 SDRAM (667MHz); ATI Radeon Xpress1150 (up to 128MB shared system memory)
OR
HP Compaq nx6320 Business Notebook PC
Genuine Windows XP Home; Intel® Core™2 Duo Processor T5500 with Intel® Centrino® Duo Mobile Technology (1.66GHz, 2MB L2 cache, 667MHz FSB); 15" colour XGA (1024 x 768 resolution); 60GB (5400 rpm); DVD/CD-RW Combo; Broadcom NetLink Ethernet PCI Express Controller (10/100/1000 NIC), Intel® PRO/Wireless 3945ABG 802.11a/b/g Network Connection, Bluetooth 2.0+ EDR; 512MB (1 x 512MB) DDR2 SDRAM (667MHz); Intel® Graphics Media Accelerator 950 (up to 128MB shared system memor

Answer 1

Core 2 Duo is slow compared to AMD

Answer 2

IMHO, go for the 6320. But I'd get more RAM than 512MB.