To get things started, let's look at the minimum hardware requirements that you will need to have in place to even get the product to install:
- Minimum of 10 GB hard drive space for the Kali OS
- For i386 and amd64 systems 512 MB of RAM
- CD/DVD drive or USB boot support
- An active internet connection is desirable
Again, keep in mind what is listed here represents the bare bones minimum and you will want to exceed these by as wide a margin as possible to ensure decent to excellent performance. Personally, I would recommend having at least 4 GB of RAM, if not more (I personally have 8 GB or 16 GB in the systems I use respectively, but I have used 4 GB of memory in the past and been fine).