If you need to see your VRAM usage, then I think Afterburner will monitor it for you. I was using afterburner pretty heavily when I was playing a highly modded version of Skyrim for a while.
Well, Windows will use system memory if you are on integrated graphics. I don't know if Task Manager lumps that into the executable that's using it, but I suspect that it doesn't and it keeps it set aside as reserve "System" RAM that isn't readily viewable (some small part will be dedicated, along with a larger Shared RAM portion that's more flexible).
Dedicated GPUs though, they will have their own dedicated VRAM and yeah, a video card utility like Afterburner can show it. Windows doesn't directly deal with VRAM use for dedicated cards, that's all up to the video driver.
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Dedicated GPUs though, they will have their own dedicated VRAM and yeah, a video card utility like Afterburner can show it. Windows doesn't directly deal with VRAM use for dedicated cards, that's all up to the video driver.