[SOLVED] Advice on if if it's worth to upgrade?

[meganutman]

Hey guys so I've been gifted my brothers old pc that (as far as I know) has these specs.
Psu : 450w
Ram: 8gb ddr3
Graphics card: amd hd 6670
Processor:i3 3240
2tb storage
Motherboard: ECS H61H2-MV

I would spend under £200 on the graphics providing I didn't need to upgrade anything else.
The games I'd want to play would be low key ones: skyrim with mods, Minecraft, sims, Tf2. I know my laptop can run all them-bar skyrim- but what's a good gpu to use for things like that, that's cheap aswell.

My questions are , is it worth upgrading the gpu to something better, nothing current gen, maybe a older one that can run most things nicely-nothing like bfv or the witcher 3.
Would that mean the cpu bottlenecks, and would I need to replace that?
Would that need a new Psu for these new parts?
If so should I just keep the storage and start from scratch?
Any advice on what to buy or do greatly appreciated, sorry for grammar as I'm on mobile.
Sorry to hassle you all.

 

[WildCard999]

Depends on your budget, if you have enough money to build a newer system while being able to reuse the storage and case then that's what I'd do.

 

[vapour]

Yep, you need an entirely new rig.
Witcher 3 is intensive...
Max budget?