“With a focus on breaking the limits of low latency with DDR5 memory, G.Skill is releasing an extremely low-latency sub-30 timing memory specification at DDR5-5600 CL28-34-34-89. Setting a new bar for low-latency timing performance, this memory specification with CL28 marks a new era of high-end DDR5 memory,” G.Skill says.
That's not just hyperbole. Yes, CL28 still looks high compared to what is available in the realm of DDR4.But if you want to calculate real-world RAM latency in nanoseconds, the formula is to divide the CAS latency by the RAM speed, and then multiple the result by 2,000. So in this case, 28 (CAS latency) divided by 5,600 (MT/s) is 0.005. Multiply that by 2,000 and you come up with 10ns.
To put that into perspective, the real-world latency is equivalent to a DDR4-3200 kit running at CL16. So you're looking at the same real-world latency rating between G.Skill's newest DDR5-5600 kits and a tightly timed DDR4 memory kit, but at a much faster transfer rate (plus the other benefits of DDR5 thrown into the mix).