Page Comparison

...

• Windows Vista, Windows Server 2008 R2 SP1, Windows 7, 8, 8.1, Windows Server 2012 or Windows 10
• 2 GHz Intel® Core2 processor, AMD Athlon 64 or better
• 1GB RAM minimum. 16 GB of RAM memory is highly recommended
• 1.7 GB available hard disk space for installation
• Accelerated OpenGL drivers
• 3 button mouse recommended

MacOS 

• MacOS 10.11, 10.12, 10.13 and 10.1214
• 1 GB RAM minimum. 16 GB of RAM memory is highly recommended
• 1.7 GB available hard disk space for installation
• 3 button mouse recommended

...

• Graphics cards that support CUDA platform (Nvidia), running on Windows.
• Maxwell and Pascal architectures are supported (for reference you can check this link); it could work on Kepler architecture but it could be unstable and the experience won't be good.

...

• Denoiser is capable of running on CPU or GPU, with Nvidia, AMD and Intel graphics cards; it works with CUDA (Nvidia) and also can work using OpenCL either in GPU (Nvidia, AMD or Intel) or CPU.
• When using GPU, we recommend having a graphics card with at least 2.5GB. This number is actually dependent on frame size, 2.5GB is for 2k pixels square imagery.
• When using Nvidia CUDA, the drivers should support at least CUDA 7.0
• When using AMD, the Catalyst driver should be up to date.
• In the case you get an error message when using CPU about OpenCL ICDs, it will probably be solved by installing one of these packages depending on your graphics card:
  • Nvidia: CUDA toolkit
  • AMD: AMD toolkit
  • Intel: Intel toolkit
• The Denoiser will first try to use CUDA, if it doesn't find a compatible card, it will fallback to OpenCL GPU (usually with AMD and Intel cards) and then . If the image doesn't fit in the graphics card memory, you can then use OpenCL with CPU .

...

• (which will use RAM memory).

...

For a description of the best hardware configuration for your needs, see the System Specifications FAQ page.