In order for you to play Heroes of Might & Magic III - HD Edition on Windows with minimal graphics settings, your computer must meet the following requirements
Operating System:
Windows 10 (64-bit)
Processor (CPU):
Intel Core2 Duo E4400 @ 2.0 GHz or AMD Athlon64 X2 3800+ @ 2.0 GHz (or better)
Memory (RAM):
2 GB RAM
Graphics Card:
nVidia GeForce 8800GT or AMD Radeon HD2900 (256MB VRAM or more with Shader Model 4.0)
DirectX:
Version 10
Network:
Broadband Internet connection
Sound Card:
DirectX Compatible Sound Card with latest drivers
In order to play Heroes of Might & Magic III - HD Edition on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Windows 10 (64-bit)
Processor (CPU):
Intel Core2 Duo E6600 @ 2.4 GHz or AMD Athlon64 X2 5600+ @ 2.8 Ghz
Memory (RAM):
3 GB RAM
Graphics Card:
nVidia GeForce 9800GT or AMD Radeon HD3870 (512MB VRAM with Shader Model 5.0)
DirectX:
Version 10
Sound Card:
DirectX Compatible Sound Card with latest drivers