MSI GTX 970 Gaming 4G good for my system?

SnakePlissken1

Reputable
Apr 15, 2015
2
0
4,510
I have the following specs:

Sapphire RADEON HD7850 OC
XFX Core Edition PRO550W
Intel Core i5 3450 / 3.1 GHz
ASRock H77 Pro4/MVP
Kingston HyperX blu 2x4GB
Zalman Z9 plus (case)

If I were to only upgrade the HD7850 to a MSI GTX 970 Gaming 4G and nothing else, what potential problems/bottlenecks could I run into?

Should it be fine to use the same old motherboard, PSU and CPU? Should it fit in the case?