Hello! (i know almost nothing of computers ^^) but i have noticed that my computer is kind of underperforming on the games i want to play, so i was wondering if i should buy a new graphics card or an entirely new computer 
Devicename DESKTOP-BTJSGTP
Processor Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz 3.50 GHz
Installed RAM 16,0 GB
Device-id 44E165DD-24E1-45D1-AD85-CE4891CA66A6
Produkt-id 00326-00004-48884-AAOEM
Systemtype 64-bit operativsystem, x64-based-processor
Graphics card: NVIDIA GeForce GTX 970

Devicename DESKTOP-BTJSGTP
Processor Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz 3.50 GHz
Installed RAM 16,0 GB
Device-id 44E165DD-24E1-45D1-AD85-CE4891CA66A6
Produkt-id 00326-00004-48884-AAOEM
Systemtype 64-bit operativsystem, x64-based-processor
Graphics card: NVIDIA GeForce GTX 970