I bought this intending to upgrade with a 1 TB SSD and bought a 16 GB RAM stick. (BTW I bought the wrong kind the first time so make sure you get the SODIMM version) Anyway, the biggest problem I have with this computer is that there are TOO MANY conflicting reports on things. If you just look at how many slots there are for RAM you'll get 2 different answers. This is not acceptable for people who are expecting to know what they're getting. For the record, there is 1 RAM slot with 1 8 GB stick. If you buy a 16 GB stick to replace it, max you're getting RAM wise is 16 GB, not 20 as advertised since there is only 1 slot. Computer seems to work fine. It doesn't read the SSD after installation if it's not formatted. If you got a SAMSUNG SSD like I did, you'll need to get a separate 3rd party app to read it. There's just a lot of random things upon starting that is annoying me, but overall the computer works and seems to be taking my upgrades. One other thing I'm not fond of is that the screen is hard to open. There's not a good hold to be able to open the laptop screen when it's down. I've never had this problem with any of the other computers I've had. Just this one. The reason why seems to be that the lid/screen portion of the laptop tapers in and is thin. It would be hard to open if I didn't have nails to grab a ledge of the screen to pull up.