So my PC is very old an Intel Dual Core 2.0 with 2.0 GHz and 4gb of RAM. It has a puny Geforce 210 graphics card which I will upgrade to the Radeon HD 7750 since I want to use it for a while longer till I get a new PC. The current PSU is an ancient 280w power supply though it says it won't exceed 108w for some reason. However sometimes the fan gets very very loud almost to an alarming point. Thus, would getting a new graphics card (the 7750) help calm it down? Or do I need a new PSU as well? I am thinking of getting a 300w PSU since this is not intended to be a high-end gaming rig only to run a few games on medium-ish.
The reason I'm asking about the temps is because if the temps are high, your performance could be getting throttled. Thus proper cooling could help lower the sound of the fans. Yes you can buy a new graphics card with a new fan. But if you are experiencing cooling issues, you'll see the same thing happen with a new card. I also agree with photonboy, you'll need a new PSU that's 400w or greater.
Sadly I am a noob so I couldn't figure out how to run the program. Thus I don't know if anything is being bottlenecked. I have a dual core processor so it's highly likely. I bought a 300 watt power supply though since I am getting the 7750 and people said it would run on my curren 280w PSU. Many thanks though.