4 ms·
(latency = CL * 2000 / hz) CL22 is also pretty damn bad, most DDR4-3200 kits now have CL16, which makes them 10ns. But even then, your DDR4-3200CL22 has 13.75n
by ohgodplsno 4y ago
(latency = CL * 2000 / hz)
CL22 is also pretty damn bad, most DDR4-3200 kits now have CL16, which makes them 10ns. But even then, your DDR4-3200CL22 has 13.75ns, your DDR5-5600CL46 has 16.5ns. and that is assuming your PC will handle a 5600, which isn't the JEDEC standard, so most OEMs can say goodbye to it.
- jeffbee 4y agoOh really? It is the supported memory type written on the box of my Intel processor.
- ohgodplsno 4y agoOnce again, the subject is not you buying your processor individually (enthusiast hardware), but your run of the mill, 80% of people have it OEM stuff. Your tower PC bought at the local supermarket, your laptop, all of these will have a combination of: * CPU not supporting such a high rate * Motherboard not supporting it * CPU lost the silicon lottery and has a bad memory controller that struggles above basic rates * vendor put in DDR5-4800 in anyways to save up on costs * BIOS not up to date on your motherboard
- jeffbee 4y agoBut what you said is, it’s not a standard. And I’m looking at a press release from 2021 that says it is. > JESD79-5A expands the timing definition and transfer speed of DDR5 up to 6400 MT/s for DRAM core timings and 5600 MT/s for IO AC timings to enable the industry to build an ecosystem up to 5600 MT/s.
- ohgodplsno 4y agoJesus fuck, thanks for reminding me that HN is full of needlessly pedantic assholes. JEDEC _default_, not standard. Satisfied ? As in, the default value is 4800, and now, with JESD79-5A, JEDEC also recognizes that DDR5-6400 can exist. Not "is the standard".
- jeffbee 4y agoHey if you don’t want to have this conversation, stop repeating stuff you read on Reddit but don’t understand.