Ram loss after installing new video card

Well, it says that my CPU is 64-bit capable. Here's a screenshot:

BicycleRow said:

I don't think I'm gonna install 64-bit. It uses more memory thus my PC is gonna become a little bit slower, right? If so, I'm gonna stick with the 32-bit version. I want my PC to be as fast as possible.

Also, without 64-bit, there is no way I can restore the RAM I lost?

There wouldn't be any much different from using 32-bit and 64-bit OS unless you upgrade to more than 4GB.

Also, more and more programs are starting to utilize 64-bit and slowly leaving behind 32-bit architecture. Your processor is 64-bit capable. I've had a slower (Pentium Dual Core E2200) system and runs W10 64-bit butter smooth.

Well, I'm probably going to do it then. I'm gonna do a backup of my 32-bit version and then install the 64-bit one. I just hope there's not going to be a problem with activating it and that it won't have a huge difference in performance. I'm kinda happy with my 32-bit version but I wanna get the most out of my RAM.