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Most iGPUs do not use a unified address space. They use system RAM, yes. But they get a partition of it to themselves, and the size of this partition is often
by dralley 5y ago
Most iGPUs do not use a unified address space. They use system RAM, yes. But they get a partition of it to themselves, and the size of this partition is often tweakable in the graphics driver settings.
The M1 Mac is one of the few laptops that actually does have fully unified memory.
https://eclecticlight.co/2020/11/11/how-unified-memory-blows-the-socs-off-the-m1-macs/ https://eclecticlight.co/2020/11/11/how-unified-memory-blows...
- kcb 5y agoI don't believe that's true. And the driver/bios settings don't really do what people think they do. https://www.intel.com/content/www/us/en/support/articles/000020962/graphics.html https://www.intel.com/content/www/us/en/support/articles/000... And zero copy buffers and unified address space are totally a thing on Intel, AMD, and Nvidia(Tegra) igpus. Sounds like there's more than a bit of "Apple Magic" in that blog post.
- formerly_proven 5y agoAMD APUs have had a unified address space for ten years or so.