below is my target, which one is better in performance? (better processor?) which one should i buy?
HP Pavilion tx2032AU Entertainment Notebook PC
Genuine Windows Vista® Home Premium; AMD Athlon64™ TK-57 (1.9 GHz, 512KB L2 Cache); 12.1" WXGA High-Definition HP Brightview Wide Touchscreen Display (1280 X 800); 2048MB (667DDR2) / max to 4GB* DDR2 Memory (1024 x 2 pcs); 160GB HDD (5400rpm); DVD +/- RW Double Layer Drive with LightScribe; Bluetooth; 802.11a/b/g; Integrated 10/100/1000 Gigabit LAN; Touch Pad with On/Off button and dedicatd vertical Scroll Up/Down pad; 5-in-1 intergrated digital media reader slot (XD, SD, MMC, Memory Stick, Memory Stick PRO); NVIDIA® GeForce™ Go 6150 (UMA / shared 64MB graphic); One year International Limited Warranty (parts/labor/carry-in)
Compaq Presario V3759TU Notebook PC
Genuine Windows Vista® Home Premium; Intel® Core™2 Duo Processor T5550 (1.83 GHz, 667 MHz FSB, 2 MB L2 Cache; 2048MB 667MHz / max to 4GB* DDR2 Memory (1024 x 1 pcs); 14.1" TFT WXGA high definition widescreen LCD panel with brightview technology; 160GB HDD; DVD +/- RW Double Layer Drive; Bluetooth; 802.11b/g; Integrated 10Mbps, 100Mbps; 5-in-1 intergrated digital media reader slot; Intel Graphics Media Accelerator X3100, up to 384 MB Total Available Graphics Memory with 4096 MB system memory; one year International Limited Warranty (parts/labor/carry-in)
HP Pavilion tx2032AU Entertainment Notebook PC

Genuine Windows Vista® Home Premium; AMD Athlon64™ TK-57 (1.9 GHz, 512KB L2 Cache); 12.1" WXGA High-Definition HP Brightview Wide Touchscreen Display (1280 X 800); 2048MB (667DDR2) / max to 4GB* DDR2 Memory (1024 x 2 pcs); 160GB HDD (5400rpm); DVD +/- RW Double Layer Drive with LightScribe; Bluetooth; 802.11a/b/g; Integrated 10/100/1000 Gigabit LAN; Touch Pad with On/Off button and dedicatd vertical Scroll Up/Down pad; 5-in-1 intergrated digital media reader slot (XD, SD, MMC, Memory Stick, Memory Stick PRO); NVIDIA® GeForce™ Go 6150 (UMA / shared 64MB graphic); One year International Limited Warranty (parts/labor/carry-in)
or
Compaq Presario V3759TU Notebook PC

Genuine Windows Vista® Home Premium; Intel® Core™2 Duo Processor T5550 (1.83 GHz, 667 MHz FSB, 2 MB L2 Cache; 2048MB 667MHz / max to 4GB* DDR2 Memory (1024 x 1 pcs); 14.1" TFT WXGA high definition widescreen LCD panel with brightview technology; 160GB HDD; DVD +/- RW Double Layer Drive; Bluetooth; 802.11b/g; Integrated 10Mbps, 100Mbps; 5-in-1 intergrated digital media reader slot; Intel Graphics Media Accelerator X3100, up to 384 MB Total Available Graphics Memory with 4096 MB system memory; one year International Limited Warranty (parts/labor/carry-in)