AceXMachine
New Member
- Joined
- Apr 29, 2020
Ok, I'm running a Gigabyte Aorus Z390 Master and my RAM is 4x8GB Corsair Vengence RGB Pro (CMW32GX4M4K4266C19) XMP: DDR4 4266 (PC4 34100) @ 19-26-26-46-1.45V
Now, I didn't exactly do enough research on this beforehand (I was anxious/excited to be building a new PC again) and think this particular kit may have been overpriced and/or just plain garbage, but what's done is done.
So what has happened so far:
I could not get this memory to run reliably using XMP, even with the values (which look like garbage to me now that I kinda know what I am looking at, please correct me if wrong) manually set in BIOS
Decided to bump down to DDR4000 and go with tighter timings instead. Currently running:
CAS Latency tCL: 16
RAS to CAS delay tRCD: 18
Row Precharge Time tRP: 18
RAS Active Time tRAS: 36
Command Rate CR: 2
Write Recovery Time tWR: 24
Refresh Cycle Time tRFC: 600
RAS to RAS Delay tRRD_L: 11
RAS to RAS Delay tRRD_S: 9
Write to Read Delay tWRT_L: 19
Write to Read Delay tWRT_S: 13
Read to Precharge tRTP: 12
Four Activate Window tFAW: 47
CAS Write Latency tCWL: 16
tREFI: 32000
There are more of course but I know nothing about those and it seems that those should basically be left on Auto. Of those settings I listed, I changed the "main" timings from the default JEDEC/XMP to the 16-18-18-36 and I changed the tRFC from some rediculously high number to 600 (may try pushing that even lower) and the tREFI to 32000 (may try pushing that higher) since I basically know what those 2 do. The rest are pretty self explanatory but being that I've never done this before I don't know where to go from here.
I know that 16-16-16-36 is NOT stable and don't know if it is worth it to try bumping the voltage to get it stable as I am already at 1.45V?
What I'm asking is, with this info (if more is needed let me know), where would you go from here to try to squeeze more performance from these chips? Are there any general "rules of thumb" I may not have gotten having not been into overclocking until recently (IE: is it a big deal not to have tCL match tRCD/tRP? How much, if any, timings should I sacrifice to get 1T CR?) Was my approach of dropping 266MHz to go from 19-26-26-46 to 16-18-18-36 worth it (benchmarks seem to indicate it was)?
As I indicated in the subject this is low priority but I am open to any suggestions on my current setup. I've crammed a lot of research into this these last few weeks but I feel I've gone as far as I can safely go without some practical experience to guide me further. I am an IT professional (Obviously not in overclocking) so you don't have to worry about dumbing it down TOO much
Thanks for listening!
Now, I didn't exactly do enough research on this beforehand (I was anxious/excited to be building a new PC again) and think this particular kit may have been overpriced and/or just plain garbage, but what's done is done.
So what has happened so far:
I could not get this memory to run reliably using XMP, even with the values (which look like garbage to me now that I kinda know what I am looking at, please correct me if wrong) manually set in BIOS
Decided to bump down to DDR4000 and go with tighter timings instead. Currently running:
CAS Latency tCL: 16
RAS to CAS delay tRCD: 18
Row Precharge Time tRP: 18
RAS Active Time tRAS: 36
Command Rate CR: 2
Write Recovery Time tWR: 24
Refresh Cycle Time tRFC: 600
RAS to RAS Delay tRRD_L: 11
RAS to RAS Delay tRRD_S: 9
Write to Read Delay tWRT_L: 19
Write to Read Delay tWRT_S: 13
Read to Precharge tRTP: 12
Four Activate Window tFAW: 47
CAS Write Latency tCWL: 16
tREFI: 32000
There are more of course but I know nothing about those and it seems that those should basically be left on Auto. Of those settings I listed, I changed the "main" timings from the default JEDEC/XMP to the 16-18-18-36 and I changed the tRFC from some rediculously high number to 600 (may try pushing that even lower) and the tREFI to 32000 (may try pushing that higher) since I basically know what those 2 do. The rest are pretty self explanatory but being that I've never done this before I don't know where to go from here.
I know that 16-16-16-36 is NOT stable and don't know if it is worth it to try bumping the voltage to get it stable as I am already at 1.45V?
What I'm asking is, with this info (if more is needed let me know), where would you go from here to try to squeeze more performance from these chips? Are there any general "rules of thumb" I may not have gotten having not been into overclocking until recently (IE: is it a big deal not to have tCL match tRCD/tRP? How much, if any, timings should I sacrifice to get 1T CR?) Was my approach of dropping 266MHz to go from 19-26-26-46 to 16-18-18-36 worth it (benchmarks seem to indicate it was)?
As I indicated in the subject this is low priority but I am open to any suggestions on my current setup. I've crammed a lot of research into this these last few weeks but I feel I've gone as far as I can safely go without some practical experience to guide me further. I am an IT professional (Obviously not in overclocking) so you don't have to worry about dumbing it down TOO much
Thanks for listening!