Hey,
Please give the REASON for the upgrade. I don't want to assume it's to play games, but if it was do you even have a graphics card and at least 8GB of system memory?
The A10-5800K has both a CPU and GPU but the GPU is relatively weak so you'd still want a graphics card instead. Plus you need fast dual-channel (i.e. 2x4GB 2133MHz) to avoid seriously bottlenecking that already weak GPU (in the APU not the graphics card).
And it's like $170USD.
It feels like a lot of money for what you get. At this point I'd be putting money towards building a completely new PC or if it's just for gaming perhaps consider a gaming console instead.
There are always great console deals to be had near Christmas. You probably can't do much without at least $600 for new CPU, mobo, DDR4 memory and graphics card (sigh and Windows license) but you can probably find a console deal for $300USD.