DDR5 Intel timings

[noname8365]

Motherboard: Gigabyte Z790 AORUS ELITE AX
CPU: Intel Core i9-14900KF
RAM: G.Skill Trident Z5 RGB 32 GB (2 x 16 GB) (7200MHz 34-45-45-115 1.4V)

 

Is there anything that can be improved here? I don't seem to be able to get better performance:

 

RAM Clock frequency = 7200 MT/s
tCAS = 34
tRCD = 42
tRP = 42
tRAS = 36
tRC = 78
tWR = 22
tCWL = 26
tRRD_S = 4
tRRD_L = 7
tWTR_S = 1
tWTR_L = 1
tCCD_S = 7
tCCD_L = Auto
tCCD_L_WR = Auto
tRFC = 412
tRFC2 = 412
tRFCpb = 295
tRTP = 10
tWTP = 33
tFAW = 16
Command Rate = 1
tREFI = 262143
tREFIx9 = 255
tXP = 15
tXPDLL = 63
tPRPDEN = 1
tRDPDEN = 4
tWRPDEN = 56
tRDPRE = 10
tWRPRE = 56
tCPDED = 10
tCKE = 4
tXSDLL = 2048
tXS Offset = Auto
tMOD = 30
rdrd_sg = 13
rdrd_dg = 7
rdrd_sd = 1
rdrd_dd = 4
rdwr_sg = 19
rdwr_dg = 19
rdwr_sd = 4
rdwr_dd = 4
wrwr_sg = 12
wrwr_dg = 7
wrwr_sd = 4
wrwr_dd = 4
wrrd_sg = 55
wrrd_dg = 45
wrrd_sd = 10
wrrd_dd = 14

[emosun]

1 minute ago, noname8365 said:

Is there anything that can be improved here? I don't seem to be able to get better performance:

is there a task you are unable to do at the current speed

[noname8365]

Just now, emosun said:

is there a task you are unable to do at the current speed

Yes, getting a better benchmark while it still being stable.

[RONOTHAN##]

For future reference, just include a screenshot of MemTweakIt, ASRock Timing Configurator, MSI Dragonball, etc. rather than listing all the timings out by hand. It just makes it a lot easier to read. 

 

Overall, your timings are about as low as I'd expect them to be. You might be able to lower tCWL a bit (the couple of kits I've used have been able to do as low as 8), tRDPRE might do a little lower if you're lucky (maybe not though, not all kits do below 10), and WRWR_SG might do 9 rather than 12, but even if all of those are lowered it's unlikely you'd be able to measure a performance difference, let alone notice one. 

[noname8365]

4 minutes ago, RONOTHAN## said:

For future reference, just include a screenshot of MemTweakIt, ASRock Timing Configurator, MSI Dragonball, etc. rather than listing all the timings out by hand. It just makes it a lot easier to read.

I haven't been able to find any download of those that work on my computer so I've just been using the BIOS.

 

5 minutes ago, RONOTHAN## said:

Overall, your timings are about as low as I'd expect them to be. You might be able to lower tCWL a bit (the couple of kits I've used have been able to do as low as 8), tRDPRE might do a little lower if you're lucky (maybe not though, not all kits do below 10), and WRWR_SG might do 9 rather than 12, but even if all of those are lowered it's unlikely you'd be able to measure a performance difference, let alone notice one. 

Thx! Yes I haven't seen any improvement for some time but I made everything as low as possible just in case. Whenever I lower tCWL it raises tWR, and I can't manually set tWR lower than 48. If I go tCWL=8, tWR increases to something like 40, possibly it affects tWTP as well (but there isn't any performance difference anyway).

[RONOTHAN##]

Just now, noname8365 said:

Whenever I lower tCWL it raises tWR, and I can't manually set tWR lower than 48.

Rather than setting tWR manually, set tWRPRE. tWRPRE is what actually sets tWR, so when you lower tCWL, you can lower tWR by about the same amount. 

 

3 minutes ago, noname8365 said:

I haven't been able to find any download of those that work on my computer so I've just been using the BIOS.

https://www.dropbox.com/s/fee9xkrv54ptb5t/MemTweakIt_20221101.zip?dl=0

https://community.hwbot.org/topic/220910-asus-rog-maximus-apex-z790-apex-15/

 

This download should work. You won't be able to change values if you're doing it from inside Windows 11 (at least I haven't figured out how to on my setup), but it would at least let you read the timings while you're in the OS.