New CPU upgrade

Hey there.
My current processor is basically dragging its feet and can't keep up with what I need to get done, so I'm looking to swap it out for something with more muscle. Is it even doable to upgrade the CPU on a Dell Inspiron 15, and if so, where would I even track down a decent replacement?

It wouldn't hurt to mention which processor is actually inside. I'm pretty sure this model didn't just ship with one single CPU option.

It’s packing an Intel Core i5-3337U clocked at up to 2.80GHz

Technically, an A10-4600M should be an option, but we’re talking a measly 15% boost at best. Plus, finding one would be a nightmare. They're sitting on eBay for about $117, which is just a total joke.