Frequency is good, but have you heard about its friend, latency?
It looks like G.Skill has cracked the code to one of the biggest complaints with DDR5 memory, that being propensity for high CAS latencies. There have been efforts to release lower latency kits, some ...
In brief: DDR5 memory chips generally have higher latency than DDR4, but this usually doesn't pose a problem under normal usage. However, MSI has released a firmware update to address a mild latency ...
If you bought some slow RAM to save money during the ongoing RAMageddon, you could manually overclock it to achieve greater memory performance. Alternatively, you could use an automatic overclock tool ...