Discussion How much difference does memory latency make on gaming performance?

[Order 66]

Does going from a CAS latency of 40 to 30 make any noticeable difference on gaming performance? My RAM in my system is DDR5 6000 CL40, would there be any noticeable difference going with DDR5 6000 CL 30?

 

[hotaru.hino]

The short answer is it depends. Both on the game and the CPU.

 

[Order 66]

The short answer is it depends. Both on the game and the CPU.

looks like I should have gone with DDR5 6000 CL 30 since it is apparently an 11% difference between that and DDR5 6000 CL 40. I don't think I can push RAM clocks any higher on my system. Why does DDR5 have so much more CAS latency than DDR4?

 

[kerberos_20]

Why does DDR5 have so much more CAS latency than DDR4

6000 CL40 is same as 3000 CL20
6000 CL30 is same as 3000 CL15
DDR5 not really that much different in terms of latency

 

[hotaru.hino]

Why does DDR5 have so much more CAS latency than DDR4?

Latency figures are in clock cycles, so higher doesn't necessarily mean worse.