Hi, You have a slot for M.2 SATA SSD and you can install a M.2 SSD up to 512GB, you can upgrade the graphics to 1050-Ti but make sure you have PSU unit to support it(minimum requirement is 300W but go for a 400W PSU). http://www.userbenchmark.com/System/Acer-Aspire-XC-780/38559
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You have a slot for M.2 SATA SSD and you can install a M.2 SSD up to 512GB, you can upgrade the graphics to 1050-Ti but make sure you have PSU unit to support it(minimum requirement is 300W but go for a 400W PSU).
http://www.userbenchmark.com/System/Acer-Aspire-XC-780/38559
Acer Predator PT516-51s Performance Results - UserBenchmark