i loocking to buy a new cpu for lga775 socket

[iskandartsani7]

this is my motherboard detail

manufacture - Hawleet-packard
mode l- 0AACH
Chipset -INTEL Q35 REV A2
SOUTHBRIDGE - INTEL 82801I0 (ICH9DO)
LPCIO - SMSC SCH5327
socket- lga 755
my computer: hp compaq dc7900 convertible minitower

please tell me what best cpu for my pc

 

[dudio]

Intel Core 2 Quad: Q9550

Info from this source:
http://www.game-debate.com/motherboard/index.php?mot_id=1991&motherboard=HP