Dell mobo CPU compatibility

your motherboard was made by intel -> Intel G45M03 Motherboard LGA775 Intel G45 Dell JJW8N Vostro 220

looking around I found information rather skimpy on Inet for it aside this;

This Dell motherboard is compatible with Intel Pentium Dual-Core E2200, Intel Core 2 Duo E8500, and Intel Core 2 Duo E7400 processors.
since it is a vostros 220/220 S board, I looked for manual : https://www.manualslib.com/manual/227569/Dell-Vostro-220.html
and it confirms previous statement.