wondering if it is possible to pull out more cpu performance out of my old Precision M70 ?

Current configuration:

CPU: Intel Pentium M 770 Dothan 2.13 GHz/800 MHz Speedstep, 2MB Level 2 Cache, Bus Speed 133 MHz, ext. Busspeed 533 MHz, 90nm Technology, Stepping 8, Revision C0

Motherboard: Dell 0J4020, Intel 915PM/GM Chipset, BIOS A04

RAM: PC2-4300 (266 MHz), 4-4-4 latency, 2 x 1024 MBytes

Is there a direct successor to the Pentium M built in this machine which is able to use to replace the Pentium M ? I'm not sure if a Core Duo T2450 Yonah would be a good choice, but it is/was available for Socket 479 as BX80539T2450, not sure if the BIOS is supporting it.