HELP! RE: Noob PC Setup 2017

[John Leonard]

Hello, everyone I am back.

I purchased a Corsair VS 450 PSU for my PC. I played a single game at dota, and I can now feel the difference when it comes to fps feels. However, again, during clashes/ team fights I still experience the FPS drop. Is there  a way to boost up my GPU to use 99-100% of its capacity/ power? Because I've tried monitoring my OLD GPU with lowest settings but still it consistently provides the MAXIMUM capacity, whereas my GTX 750ti doesn't. Am I correct to suspect this causes the problem? I'm not having an overclocked rig by the way.

 

But here's the new deal, I noticed that my DISK USAGE is at its maximum 100% (95%up) even when I only have steam opened, or opening a browser. I disabled, from services.msc the following: SuperFetch and Background Intelligent Transfer Service but the problem still  isn't really totally fixed. Disk Usage still rises up.