3 ms·
How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?
by rowanG077 2y ago
How does that work? I imagine you now have the feed to clock from ram back to the CPU? Or does it synchronize two local clocks somehow?
- Gracana 2y agoThe clock redriver uses a phase locked loop to generate a few identical clock signals for use by the DRAM chips on the module. This same tech is also used for clock multipliers and dividers throughout digital systems. Rambus has details on their "DDR5 client clock driver" here: https://www.rambus.com/memory-interface-chips/ddr5-client-dimm-chipset/ddr5-ckd/ https://www.rambus.com/memory-interface-chips/ddr5-client-di...
- Numerlor 2y agoThis anandtech article seems to be a decent summary of what it's doing, the JEDEC JESD82-531A.01 spec is also freely available (with registration) if you're feeling adventurous https://www.anandtech.com/show/21455/making-desktop-ddr5-even-faster-cudimms-debut-at-computex https://www.anandtech.com/show/21455/making-desktop-ddr5-eve...