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Weird readout on Ryzen Timing Checker

 
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post #1 of 10 (permalink) Old 07-28-2020, 05:28 AM - Thread Starter
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Weird readout on Ryzen Timing Checker

Although set correctly in BIOS(24 Ohm etc), the Ryzen Timig Checker shows odd values of 120 Ohm on CLKDrvStr and other comparable settings.

Anyone know what is causing this? Does it reflect actual values although set otherwise in BIOS?
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CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
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post #2 of 10 (permalink) Old 07-28-2020, 05:54 AM
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Quote: Originally Posted by EddieZ View Post
Although set correctly in BIOS(24 Ohm etc), the Ryzen Timig Checker shows odd values of 120 Ohm on CLKDrvStr and other comparable settings.

Anyone know what is causing this? Does it reflect actual values although set otherwise in BIOS?
Known bug, it's because SMU missmatches
Can't do anything at all - each new AGESA and new SMU changes the access code / communication code

RTC remains to be working on 2nd gen, but it's just a bug
Sometimes RTC can also show a big mess if you have HWInfo at the same time running.
A fix is just a program restart
You can't do much to fix it.
RTC existed also for 3rd gen before AMD complained and put under NDA, The Stilt's research
Nothing we can do, but it doesn't bother much
Exmpl
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Last edited by Veii; 07-28-2020 at 06:00 AM.
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post #3 of 10 (permalink) Old 07-28-2020, 06:15 AM - Thread Starter
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Quote: Originally Posted by Veii View Post
Known bug, it's because SMU missmatches
Can't do anything at all - each new AGESA and new SMU changes the access code / communication code

RTC remains to be working on 2nd gen, but it's just a bug
Sometimes RTC can also show a big mess if you have HWInfo at the same time running.
A fix is just a program restart
You can't do much to fix it.
RTC existed also for 3rd gen before AMD complained and put under NDA, The Stilt's research
Nothing we can do, but it doesn't bother much
Exmpl
Thanks, explains a lot. Updated to new BIOS with AGESA 1.0.0.6 a week ago, reading was OK with previous AGESA (should have mentioned this ;-) ).

CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
Graphics Card: Sapphire RX590 Nitro+
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post #4 of 10 (permalink) Old 07-28-2020, 06:25 AM
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Quote: Originally Posted by EddieZ View Post
Thanks, explains a lot. Updated to new BIOS with AGESA 1.0.0.6 a week ago, reading was OK with previous AGESA (should have mentioned this ;-) ).
No worries
On the timings, if you feel like stability testing them again:
Change tRC 44, tRFC 352-262-161, drop tWR to 16, tRRD_L should be 6 on your current setup, and tFAW 16 as 4* tRRD_S
Rest is fine, just use the whole tRFC for stability

This aren't dual Rank units correct ?

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post #5 of 10 (permalink) Old 07-28-2020, 08:44 AM - Thread Starter
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Quote: Originally Posted by Veii View Post
No worries
On the timings, if you feel like stability testing them again:
Change tRC 44, tRFC 352-262-161, drop tWR to 16, tRRD_L should be 6 on your current setup, and tFAW 16 as 4* tRRD_S
Rest is fine, just use the whole tRFC for stability

This aren't dual Rank units correct ?
Correct, SR

Update:

Changes applied, small improvement (113.7 => 112.2) in memtest and running OK so far.
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CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
Graphics Card: Sapphire RX590 Nitro+
Cooling: NZXT X63

Last edited by EddieZ; 07-28-2020 at 10:22 AM.
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post #6 of 10 (permalink) Old 07-29-2020, 03:53 AM - Thread Starter
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So this is my final setup, will try to tighten tRFC timing some more without losing stability.

Update: tRFC 262 appears stable too
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CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
Graphics Card: Sapphire RX590 Nitro+
Cooling: NZXT X63

Last edited by EddieZ; 07-29-2020 at 04:26 AM.
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post #7 of 10 (permalink) Old 07-31-2020, 06:38 AM
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Quote: Originally Posted by EddieZ View Post
So this is my final setup, will try to tighten tRFC timing some more without losing stability.

Update: tRFC 262 appears stable too
tRFC 264-196-121 would be what you are looking for. With either tWR 12, tRTP 6 - or the current same one 16/8
If you drop tRC to 42, 252-187-115 would work well too ~ then with again, either 16/8 or 12/6 tWR, tRTP

On Single Rank kits, tRC allows to go down to -2 without having a penalty of doing so
I'd add tWRRD of 3 tho, and later at the very end, try if you can go tRDWR 6 or get a CMOS reset out (save your bios profile first !)

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CPU > TR 1950X [email protected]1.2v & [email protected]1.365v[105Mhz FSB](3.23Beta)
#Main: 1700X [email protected]1.365v1.73Ghz IMC CL14 (64.2ns)」+ Dark Rock 3 | X370 Taichi 1.0.0.3 ABBA by The Stilt | Viper Steel [PVS416G400C9K]| Gigabyte 970 G1 | Samsung 850 Evo
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post #8 of 10 (permalink) Old 08-02-2020, 05:55 AM - Thread Starter
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Quote: Originally Posted by Veii View Post
tRFC 264-196-121 would be what you are looking for. With either tWR 12, tRTP 6 - or the current same one 16/8
If you drop tRC to 42, 252-187-115 would work well too ~ then with again, either 16/8 or 12/6 tWR, tRTP

On Single Rank kits, tRC allows to go down to -2 without having a penalty of doing so
I'd add tWRRD of 3 tho, and later at the very end, try if you can go tRDWR 6 or get a CMOS reset out (save your bios profile first !)
Thanks.
Added the first settings you provided. No problems booting or starting Windows.
Not tested yet with membench or TM5 yet. Usually first test by playing some memory intensive game like The Division :-)

What would tWRRD setting do, moving it from 1 to 3 and tRDWR to 6? Stabilty?
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CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
Graphics Card: Sapphire RX590 Nitro+
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post #9 of 10 (permalink) Old 08-02-2020, 08:24 AM
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Quote: Originally Posted by EddieZ View Post
What would tWRRD setting do, moving it from 1 to 3 and tRDWR to 6? Stabilty?
The lower tRDWR is, the higher your throughput becomes as timing efficiency increases
tWRRD is used to add delay, in order to help using lower tRDWR

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RAM > Viper Steel @ 3466C14 (64.2ns) & Alt | Hynix-MFR 3333CL14 (72.5ns) & Alt

GPU > Gigabyte 970 G1 @ 1595|1900 (Hynix) | RX 580 Red Devil GS @ 1620|2200 (Micron)
CPU > TR 1950X [email protected]1.2v & [email protected]1.365v[105Mhz FSB](3.23Beta)
#Main: 1700X [email protected]1.365v1.73Ghz IMC CL14 (64.2ns)」+ Dark Rock 3 | X370 Taichi 1.0.0.3 ABBA by The Stilt | Viper Steel [PVS416G400C9K]| Gigabyte 970 G1 | Samsung 850 Evo
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post #10 of 10 (permalink) Old 08-02-2020, 02:16 PM - Thread Starter
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Quote: Originally Posted by Veii View Post
The lower tRDWR is, the higher your throughput becomes as timing efficiency increases
tWRRD is used to add delay, in order to help using lower tRDWR
Learned something, thanks.
Adjusted these settings as well and will start testing.

Did read quite some articles about the relationships of the settings and the working of DDR4 but unfortunately my brain is not suitable for this line of work (no surprise, have known this for 30 years or so :-) )

Survived the easy membench in a new record, 110.36

Started tuning at 113.7 to 112. And now some good progress.
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CPU: Ryzen 2600X
Motherboard: ASUS TUF-PLUS GAMING X470 BIOS 5602 AGESA 1.0.0.6
Memory: 2x8Gb G.Skill TridentZ Neo 3200C14GTZN @1.39V / 3466C14-15-14 / (62.9ns) 54.344 (read) 53.665 (write)
Graphics Card: Sapphire RX590 Nitro+
Cooling: NZXT X63

Last edited by EddieZ; 08-03-2020 at 08:00 AM.
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