Athlon 64 X2 Vs Turion 64 X2 ….. Help Me Please!!?

Hi ,
Can someone tell me which laptop would be a better buy ? They are both the same price . The Athlon 64 X2 or the Turion 64 X2 ?
Network Acer InviLink Wi-Fi IEEE 802.11b/g
Gigabit Ethernet IEEE 802.3ab
Processor AMD Athlon 64 X2 TK-55 1.8GHz
Hard Drive 120GB
Manufacturer Acer, Inc
Ports 1 x DC Power Input
1 x RJ-11 Modem
1 x RJ-45 Network
1 x VGA
1 x Mini-phone S/PDIF/Audio Out
1 x Mini-phone Microphone
1 x Mini-phone Audio In
1 x mini-DIN S-Video Out
1 x IEEE 1394 – FireWire
4 x 4-pin Type A USB 2.0 – USB
Operating System Windows Vista Home Premium
Processor Technology HyperTransport Technology
Keyboard Standard Size
Manufacturer Part Number LX.AJ70X.027
Standard Warranty 1 Year Limited
Standard Memory 1GB
Display Screen 15.4″ WXGA Widescreen Active Matrix TFT Color LCD with CrystalBrite
Optical Drive DVD-Writer – DVD-RAM/R/RW (Integrated)
Batteries 1 x 6-cell Lithium Ion (Li-Ion) Standard Battery
Manufacturer Website Address www.acer.com
Bus Speed 1600MHz
Maximum Memory 4GB
Dimensions 14.4″ Width x 10.8″ Depth
Graphics Controller nVIDIA GeForce 7000M
Memory Technology DDR2 SDRAM
Product Line Aspire
Chipset nVIDIA nForce 610M
Product Name Aspire 5520-5908 Notebook
Memory Standard DDR2-667/PC2-5300
Product Type Notebook
Network Acer InviLink Wi-Fi IEEE 802.11b/g
Gigabit Ethernet IEEE 802.3ab
Processor AMD Turion 64 X2 TL-58 1.9GHz
Hard Drive 120GB
Manufacturer Acer, Inc
Ports 1 x DC Power Input
1 x RJ-11 Modem
1 x RJ-45 Network
1 x VGA
1 x Mini-phone Audio Out
1 x Mini-phone Microphone
1 x Mini-phone Audio In
1 x mini-DIN S-Video Out
1 x IEEE 1394 – FireWire
1 x IrDA Fast Infrared
4 x 4-pin Type A USB 2.0 – USB
Keyboard Standard Size
Operating System Windows Vista Business
Processor Technology HyperTransport Technology
PowerNow Technology
AMD64 Technology
Manufacturer Part Number LX.TKU0Z.003
Standard Warranty 1 Year Limited
Standard Memory 1GB
Display Screen 15.4″ WXGA Widescreen Active Matrix TFT Color LCD
Optical Drive DVD-Writer – DVD-RAM/R/RW (Integrated)
Batteries 1 x 6-cell Lithium Ion (Li-Ion) Standard Battery
Manufacturer Website Address www.acer.com
Bus Speed 1600MHz
Maximum Memory 4GB
Dimensions 1.2″ Height x 14.2″ Width x 10.5″ Depth
Graphics Controller ATi Radeon Xpress 1250
Memory Technology DDR2 SDRAM
Weight 6.4 lb
Product Line TravelMate
Chipset ATi M690G
Product Name TravelMate 5520-5678 Notebook
Memory Standard DDR2-667/PC2-5300
Product Type Notebook