This is your processor: Intel® Celeron® Processor B800 (2M Cache, 1.50 GHz) Product Specifications
If you are looking to upgrade this processor, you will need to contact the manufacturer of your system/motherboard and ask them what processors are compatible with THEIR BIOS.
If you want just socket information, processors that can use socket FCPGA988 may be compatible. Again, you have to determine if the BIOS supports any processor you plan to use.
Here is a list of processors that are socket compatible (but may not work in your system):