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Out of interest, would you get a similar bandwidth using DDRx on this card over PCIe, to using DDRx in the standard memory sockets on a motherboard Edit: Looks
by anfractuosity 4y ago
Out of interest, would you get a similar bandwidth using DDRx on this card over PCIe, to using DDRx in the standard memory sockets on a motherboard
Edit:
Looks like the slowest DDR4 gives 19200 MB/s
https://uk.crucial.com/support/memory-speeds-compatability https://uk.crucial.com/support/memory-speeds-compatability
Not sure what PCIe that card supports is though
- convolvatron 4y agoI haven't kept up with the speed and feeds, but in general PCI bandwidth is a decimal order of magnitude less than all the memory controller bandwidth
- namibj 4y agoA modern AMD Zen3 has more PCIe bandwidth than DDR4. With somewhat slow ram even if you measure half-duplex.
- theandrewbailey 4y agoLooks like the card is PCIe 4.0 x4, which gives about 8GB/s. Not sure if this board is driving the RAM at full speed, or how many controllers there are, but more lanes could make this faster.
- BizarroLand 4y agoLooks like one controller per lane, so if this 4x card finds a good market we might be looking at 8x or 16x siblings in the future. This isn't a good device for most home users, but for businesses that cache a lot of high speed data this could be a useful tool.