Memory Bus Width
- Thread starter jshhndsd
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Rookie_MIB
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- Jul 27, 2013
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Are talking about CPU->RAM? GPU->VRAM? For pretty much all x86/x64 CPU's, it's 64bits wide (applies to DDR-DDR4). For GPUs, it can vary from 64bits to 1024bits.
Rookie_MIB
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Well, they vary from GPU to GPU. Here's the list of Radeon GPUs, it has a chart of full specs, including bus width:
https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units
And for Nvidia GPUs:
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units
Google is your friend...
https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units
And for Nvidia GPUs:
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units
Google is your friend...
- May 27, 2010
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amd64/x86-64 computers typically have a 128bit memory bus.
Bus width is a minor figure for GPUs. Bandwidth is more important. And even more important than that, how the data is processed from such a data pipeline.
AMD has cards with a 1024 bit bus, but they don't compete with the 256bit bus width of the latest Nvidia cards, excepting the Titan XP with is 384bit bus. AMD's latest cards also have a 256bit bus. We can probably assume AMD will release their Vega line with a 512bit bus. This typically what has happened every other generation or so.
Buses are more expensive the larger they are, and there is more chance for defective construction.
Bus width is a minor figure for GPUs. Bandwidth is more important. And even more important than that, how the data is processed from such a data pipeline.
AMD has cards with a 1024 bit bus, but they don't compete with the 256bit bus width of the latest Nvidia cards, excepting the Titan XP with is 384bit bus. AMD's latest cards also have a 256bit bus. We can probably assume AMD will release their Vega line with a 512bit bus. This typically what has happened every other generation or so.
Buses are more expensive the larger they are, and there is more chance for defective construction.
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