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What is CUDA?
CUDA is software from NVIDIA that lets programs use NVIDIA graphics cards for fast math, and many AI tools depend on it.
- Category Hardware
- Updated 20 Oct 2026
CUDA, explained simply
CUDA is a toolkit made by NVIDIA. It lets developers send heavy math to an NVIDIA GPU.
Many AI tools were built with CUDA. That is why some of them say they need an NVIDIA card.
If you see a guide saying CUDA is required, it means a card from another maker may not work. Some tools offer other options.
On ITG Now, our free tool guides say when a tool needs an NVIDIA card with CUDA.
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Questions people ask about CUDA
Do I need CUDA to use AI tools?
Only if you run a tool on your own NVIDIA graphics card and it requires CUDA. Online tools don't need it.
Does CUDA work on a Mac?
No. CUDA is for NVIDIA cards, and Macs use Apple chips instead. Many tools have another way to run on a Mac.
Is CUDA free?
The toolkit is free to download from NVIDIA. You still need a compatible NVIDIA graphics card.