Clevo Laptop CPU upgrade.

I have a never used old laptop “showroom condition” Clevo M760t running on an Intel 585 single core 2.167 Ghz cpu Socket P. I am running Ubuntu on SSD hard drive . Is there any chance of upgrading the cpu to core 2 duo. Do I need to keep to the same Front Side Bus of 667 Mhz of the Intel 585. Phoenix Technologies Bios Version: 1.00.05. Clevo co not offering any more backup. Managed to speak to Clevo UK service centre who was not 100% sure when he said Intel T9400 2,53 ghz might work.

Thanks

Ttony.

The manual states the following as being compatable:

http://www.s-manuals.com/pdf/notebook/clevo/clevo_m740t,_m740tu,_m760t,_m760tu_service_manual.pdf

Intel® Core™2 Duo Processor (478-pin) Micro-FC-PGA Package, Socket P TDP: 35W T9400/ T9600 45nm (45 Nanometer) Process Technology 6MB On-die L2 Cache & 1066MHz FSB 2.53/ 2.8 GHz
Intel® Core™2 Duo Processor (478-pin) Micro-FC-PGA Package, Socket P TDP: 25W P9500 45nm (45 Nanometer) Process Technology 6MB On-die L2 Cache & 1066MHz FSB 2.53 GHz
Intel® Core™2 Duo Processor (478-pin) Micro-FC-PGA Package, Socket P TDP: 25W P8400/ P8600 45nm (45 Nanometer) Process Technology 3MB On-die L2 Cache & 1066MHz FSB 2.26/ 2.40 GHz