This message was posted on behalf of Intel Corporation
In regard to your concern, please bear in mind that since it is an upgrade for your laptop, you will need to confirm with your manufacturer (OEM) the compatibility of the processor and the motherboard.
According to Intel website, both processors seems to be compatible.
Processor B830 and i3-2310M comparison
Although my recommendation it is to confirm with Acer the compatibility and the upgrade options that you have for your laptop.
Acer Contact Support
I am looking forward to hearing from you.