I've read that in trying to estimate the interaction of latency and clock speed for memory this formula can be used: CL / MHz * 1000 = best responsiveness in milliseconds
But how far / how seriously can you really take that? I don't have trouble believing that DDR4-3733 with CL17 could be faster than DDR4-3800 with CL19, for example, but it's hard to accept that DDR4-2400 CL10 and DDR4-3600 CL15 perform the same.
If you filter DDR4 by CAS Latency at Newegg, take the fastest clock speed available for each, and rank by the formula you get an order about which I'm fairly skeptical:
CL19 DDR4-4600 - 4.13
CL10 DDR4-2400 - 4.17
CL15 DDR4-3600 - 4.17
CL14 DDR4-3200 - 4.38
CL16 DDR4-3600 - 4.44
CL18 DDR4-4000 - 4.50
CL17 DDR4-3733 - 4.55
CL13 DDR4-2666 - 4.88
CL12 DDR4-2400 - 5.00
And hell, that'd put my current CL8 DDR3-1600 from 2011 still at a pretty competitive position.
But how far / how seriously can you really take that? I don't have trouble believing that DDR4-3733 with CL17 could be faster than DDR4-3800 with CL19, for example, but it's hard to accept that DDR4-2400 CL10 and DDR4-3600 CL15 perform the same.
If you filter DDR4 by CAS Latency at Newegg, take the fastest clock speed available for each, and rank by the formula you get an order about which I'm fairly skeptical:
CL19 DDR4-4600 - 4.13
CL10 DDR4-2400 - 4.17
CL15 DDR4-3600 - 4.17
CL14 DDR4-3200 - 4.38
CL16 DDR4-3600 - 4.44
CL18 DDR4-4000 - 4.50
CL17 DDR4-3733 - 4.55
CL13 DDR4-2666 - 4.88
CL12 DDR4-2400 - 5.00
And hell, that'd put my current CL8 DDR3-1600 from 2011 still at a pretty competitive position.
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