Help Needed - Latitude 120l - What Processor?

Hi what processor am i best upgrading to that will work with my latitude 120L? Looking at either a 2.2 or 2.0 ghz pentium m but i dont know what model number to look for?! Following is the information of my current cpu, im confused as it has 1024kb cache and most 2.0ghz ones on ebay only have 512kb? Please help, many thanks, Danny.

Intel(R) Celeron(R) M processor 1.60GHz
Package Socket 479 mPGA
Family/Model/Stepping 6.D.8
Extended Family/Model 6.D
Brand ID 18
Core Stepping C0
Technology 90 nm
Core Speed 1596.0 MHz
Multiplier x Bus speed 16.0 x 99.7 MHz
Rated Bus speed 399.0 MHz
Stock frequency 1600 MHz
Instruction sets MMX, SSE, SSE2
L1 Data cache (per processor) 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache (per processor) 32 KBytes, 8-way set associative, 64-byte line size
L2 cache (per processor) 1024 KBytes, 4-way set associative, 64-byte line size
Northbridge Intel i915GMS/i910GML rev. 03
Southbridge Intel 82801FBM (ICH6-M) rev. 03

 

Look for these
http://processorfinder.intel.com/List.aspx?ParentRadio=All&ProcFam=942&SearchKey=