zotac GTX 650 non ti 1gb vs ASUS Phoenix GTX 1050 ti

[Matking]

My specs are :
CPU: i5 4460 @ 3.4ghz
RAM: 8 GB DDR3 Corsair Vengeance
MB: ASUS h81m_cs
GPU: zotac GTX 650 non ti 1gb
HDD: 1tb
SCREEN RES: 1366 X 768

My question is how much performance gain I will get from upgrade..
I play games like GTA 5, WWE 2K18, ASSASSINS CREED ORIGINS, CSGO or any new game which comes out as per my liking and $$.

Edit: I got Corsair vs450 psu is it enough..

 

[Rdslw]

well A LOT. this card is med/high settings in most games. with 1366 res should rock your games. CPU will hold

 

[Matking]

well A LOT. this card is med/high settings in most games. with 1366 res should rock your games. CPU will hold

Is Corsair VS450 psu sufficient... and is my cpu good enough to not bottleneck gtx 1050 ti ....Thanks in advance

 

[Matking]

can anyone tell me if corsair vs450 psu is sufficient and will my cpu bottleneck gtx 1050 ti or not.. Any help will be appretiated..
and at last what gpu will bottleneck or is limit for my cpu.