Is DDR5-5600 CL36 good? Performance, latency, and JEDEC guide

How this is calculated

2800 MHz bus clock puts a single cycle at 0.357 ns, so 36 cycles of CL is 12.86 ns. Peak per-channel bandwidth is 44.8 GB/s, about 40% more than DDR4-3200 and 17% over DDR5-4800. This is the speed grade where DDR5's latency disadvantage vs. mature DDR4 finally evaporates for most workloads. Gaming benchmarks start tying or slightly winning against DDR4-3600 CL16 here.

Verdict

The 2800 MHz bus clock puts a single cycle at 0.357 ns, so 36 cycles of CL lands on 12.86 ns first-word, comfortably better than DDR5-4800's 16.67 ns, though it still trails a tuned DDR4-3600 CL16 kit's 8.89 ns. Peak per-channel bandwidth comes in at 44.8 GB/s, about 40% over DDR4-3200 and 17% over DDR5-4800. This is the speed grade where DDR5's long-standing latency disadvantage versus mature DDR4 finally evaporates in real workloads, and gaming benchmarks start tying or slightly winning against DDR4-3600 CL16 here. It's the OEM rating for most 2026 Intel 14th-gen laptops and prebuilts, so supply is broad and pricing is competitive.