Painfully slow. So bad that I finally bought a new PC to replace it. I kept it anyway since nobody in my family wanted it plus it wouldn't allow me to erase the hard drive so I couldn't throw it away. After a little research I found the most likely problem was that it had a disk type hard drive. Changing the internal drive was not cost effective so I bought an external SSD drive and hooked it up to the Thunder Port. Not with out problems but even I was able to eventually do it. Using the external HD to boot and computer is amazingly fast now. Had I known this before I wouldn't have had to buy a new computer.