What parts of my computer should I upgrade in order to make it run faster while recording gameplay?

Recently I've been trying to record video game gameplay, but with certain games I encounter lag and/or the video will end up stuttering. Games of which I've encountered this problem are Overwatch, Borderlands and Fortnite. I am using OBS to record my screen. My computer Specs are as follows:

-OS: Windows 7
-Processor: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz, 3301 Mhz, 4 Core(s), 4 Logical Pro
-Graphics card: NVIDIA GeForce GTX 560 Ti

I'd like to upgrade my computer in order to fix this problem and make both my games and my recordings run smoothly while they are both running simultaneously. What upgrades should I make to my computer in order to achieve this? I'm assuming that I should either get more RAM or purchase a Capture Card, but I wanted to make sure that I was putting my money in the right place.

Thank you in advance.
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More about parts computer upgrade order make run faster recording gameplay
  1. Recording is heavily dependent on your CPU (its IPC, number of cores) as well as the HDD storage (not SSD) space. It's recommended that you have a separate storage drive for use of the game and for writing the saved record. Your current 8GB RAM would suffice, though more RAM does benefit (but more for the actual game requirement itself rather than in recording).
  2. Alright. My computer currently has both an SSD and a HDD, but if we're looking at HDD I have 180 GB free out of 1.81 TB. Seeing as I've noticed that recordings eat away at my storage pretty quickly, I was already thinking of maybe getting an external hard drive, but I'm still unfamiliar with how much space record software needs to run properly. With 180 GB of free space, does OBS have enough leeway to function properly? As I've mentioned earlier, my computer's processor is a quad-core, so I may need to think of upgrading my processor if I intend to get more serious about recording. Also, I'm a little confused on how to work around the IPC. I understand more or less that's it's how many tasks a computer can receive and accomplish at once, but I'm not sure how to check this on my computer or how I would upgrade this (researching it didn't give me much information).

    In the end, out of the things you mentioned earlier, is there a specific upgrade that you believe/may have a higher chance of fixing my problem? Or am I simply going to have to upgrade through the list one by one until things run properly?
  3. Hey, It's not ALWAYS on the Cpu! All Kepler, Maxwell and Pascal GPU's support a native codec called NVENC which samples and encodes right on the GPU. Most of the times it's a separate part or a separate chip dedicated to it and you won't notice anything.

    Try it out by installing the CUDA driver into your system32 folder. Nvidia oficially removed support for older cards' hardware encoder to make Shadowplay more competitive. Sneaky.
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