Do RAM speeds now match CPU/are L3 misses less expensive?

[oxf77]

For years CPUs were much faster than memory.

The latest DDR5 seems to have 4800/5200/5600 MHz speeds.

Does this mean memory speeds have finally caught up with CPU speeds and therefore L3 cache misses are less-costly?

 

[oxf77]

L3 will always be faster than main memory, regardless of clock speed. This is because main memory is physically further away, so the latency is higher, typically by a factor of 10 in current systems.

That wasn't my question

When memory wasn't as fast as the CPU L3 cache misses cost ~200 ns, I.e this was the latency of RAM (assuming the address is in RAM).

Do the DDR5 speeds I quoted now suggest L3 cache misses are not as expensive as 200ns?

Or in other words, is memory now able to keep up with the CPU?