get a Modern SSD and see the output

Your PC’s battery shouldn’t dictate when you can work. For all-day power, get a Modern SSD and see the output comes from your old machine 

An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory. Two key components make up an SSD: a flash controller and NAND flash memory chips. The architectural configuration of the SSD controller is optimized to deliver high read and write performance for both sequential and random data requests. SSDs are sometimes referred to as flash drives or solid-state disks.