The HP HDX9450EA has a T8100 (2.1GHz, 800 mhz, 3 MB Cache) 8800M GTS (GDDR3, 512mb) but only DDR2 RAM
OR
the HP X18-11010 has a P8600 (2.4GHz, 1024 mhz, 3 MB Cache) 9600m GT (DDR2, 1024mb) with DDR3 RAM
Really don't know which is better for the money?! They are both good in different areas...