Whether or not you will be able to handle the challenge that the Dark Souls series is known for when Dark Souls 3 releases is one thing, whether or not your computer will be able to run it is an entirely different thing. There's only one way to find out and that's by comparing your rig's specifications to the PC requirements revealed by Steam.
Below, you'll find the recommended and minimum requirements for the game to run on PC. If you aren't meeting the standards you'd like, you have until April 12, 2016 to upgrade your PC or decide if you'd like to get it on the PS4 or Xbox One instead.
If your rig meets the requirements, take a look at the special editions (because they are expensive and awesome).
Minimum PC System Requirements:
OS: Windows 7/8.1/10 64 bit
Processor: AMD A8 3870 3.6 Ghz or Intel Core i3 2100 3.1Ghz
Memory: 8 GB RAM
Graphics: NVIDIA GeForce GTX 465 / ATI Radeon TM HD 6870
DirectX: Version 11
Storage: 50 GB available space
Recommended PC System Requirements:
OS: Windows 7/8.1/10 64 bit
Processor: AMD FX 8150 3.6 GHz or Intel Core i7 2600 3.4 GHz
Memory: 8 GB RAM
Graphics: NVIDIA GeForce® GTX 750, ATI Radeon HD 7850
DirectX: Version 11
Storage: 50 GB available space