Pemalite said:
padib said:
So the bandwidth, as far as I understand it, is directly related to the circuitry of the motherboard. The busses and the actual wires on the chips themselves define the bandwidth. This can't be changed after the parts are manufactured.
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No.
HBM for example completely side-steps the motherboards limitations by leveraging an interposer.
The bus is determined by the memory chips individual interface size determined in bits and how many chips you have.
So you can have 8x 16bit memory chips operating at 1ghz and it would provide the *exact* same bandwidth as 4x 32bit memory chips operating at 1ghz.
Or you could have 16x 16bit chips operating at 500Mhz for the exact same result.
It's extremely flexible because memory transaction can be made extremely parallel. - Obviously on the other-side of the memory equation you need a memory controller that can handle all of that... And higher clocked Ram or wider memory buses tend to require a more complex memory controller to manage it all.
In short you can have DDR2 Ram be faster than GDDR6 Ram, it's completely dependent on how many memory chips you want in the end.
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You can change the bandwidth on a pc true but not on a closed design, I don't think we're talking about the same thing. The rest will reply to later in another post, on mobile I'm limited.
