ROG CROSSHAIR VIII HERO(WI-FI) BIOS 2103 High Instability/Crashes/

[slice313]

@Baio post me you complete settings in the memory timings section of the BIOS, maybe I can help you out.

[RedSector73]

With previous BIOS I was able to keep my RAM @3600 CAS 14, now with the same settings from Calculator I can't do better than CAS16.
Tried to raise VRAM a bit but had no luck.

Baio

That was my fallback position with the BIOS, still fails over time. Try 1302 if you want some stabilty back and hit ASUS support with a ticket. maybe the wieght of them might make them evaulate the problem.

[Baio73]

@Baio post me you complete settings in the memory timings section of the BIOS, maybe I can help you out.

Thanks Slice, very kind!!
I post all, maybe it can be usefull for someone else:

[2020/07/30 11:10:59]

Ai Overclock Tuner [Default]
Performance Enhancer [Default]
Memory Frequency [DDR4-3600MHz]
FCLK Frequency [1800MHz]
Core Performance Boost [Enabled]
CPU Core Ratio [Auto]
Core VID [Auto]
CCX0 Ratio [Auto]
CCX1 Ratio [Auto]
TPU [Keep Current Settings]
Performance Bias [None]
Precision Boost Overdrive [Auto]
Precision Boost Overdrive Scalar [Auto]
Max CPU Boost Clock Override [Auto]
Platform Thermal Throttle Limit [Auto]
DRAM CAS# Latency [16]
Trcdrd [15]
Trcdwr [14]
DRAM RAS# PRE Time [14]
DRAM RAS# ACT Time [30]
Trc [44]
TrrdS [6]
TrrdL [8]
Tfaw [24]
TwtrS [4]
TwtrL [12]
Twr [24]
Trcpage [Auto]
TrdrdScl [5]
TwrwrScl [5]
Trfc [468]
Trfc2 [Auto]
Trfc4 [Auto]
Tcwl [14]
Trtp [8]
Trdwr [8]
Twrrd [3]
TwrwrSc [1]
TwrwrSd [7]
TwrwrDd [7]
TrdrdSc [1]
TrdrdSd [5]
TrdrdDd [5]
Tcke [1]
ProcODT [40 ohm]
Cmd2T [1T]
Gear Down Mode [Enabled]
Power Down Enable [Disabled]
RttNom [RZQ/7]
RttWr [Dynamic ODT Off]
RttPark [RZQ/5]
MemAddrCmdSetup [Auto]
MemCsOdtSetup [Auto]
MemCkeSetup [Auto]
MemCadBusClkDrvStren [24.0 Ohm]
MemCadBusAddrCmdDrvStren [20.0 Ohm]
MemCadBusCsOdtDrvStren [24.0 Ohm]
MemCadBusCkeDrvStren [24.0 Ohm]
Mem Over Clock Fail Count [Auto]
Voltage Monitor [Die Sense]
CPU Load-line Calibration [Auto]
CPU Current Capability [Auto]
CPU VRM Switching Frequency [Auto]
VRM Spread Spectrum [Disabled]
Active Frequency Mode [Disabled]
CPU Power Duty Control [T.Probe]
CPU Power Phase Control [Auto]
CPU Power Thermal Control [120]
VDDSOC Load-line Calibration [Auto]
VDDSOC Current Capability [Auto]
VDDSOC Switching Frequency [Auto]
VDDSOC Phase Control [Auto]
DRAM Current Capability [100%]
DRAM Power Phase Control [Extreme]
DRAM Switching Frequency [Auto]
CPU Core Current Telemetry [Auto]
CPU SOC Current Telemetry [Auto]
Force OC Mode Disable [Disabled]
SB Clock Spread Spectrum [Auto]
VTTDDR Voltage [0.72500]
VPP_MEM Voltage [2.50000]
DRAM CTRL REF Voltage on CHA [Auto]
DRAM CTRL REF Voltage on CHB [Auto]
VDDP Voltage [0.90000]
1.8V Standby Voltage [Auto]
CPU 3.3v AUX [Auto]
1.2V SB Voltage [Auto]
DRAM R1 Tune [Auto]
DRAM R2 Tune [Auto]
DRAM R3 Tune [Auto]
DRAM R4 Tune [Auto]
PCIE Tune R1 [Auto]
PCIE Tune R2 [Auto]
PCIE Tune R3 [Auto]
PLL Tune R1 [Auto]
PLL reference voltage [Auto]
T Offset [Auto]
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Sense MI Offset [Auto]
Promontory presence [Auto]
Clock Amplitude [Auto]
CPU Core Voltage [Auto]
CPU SOC Voltage [Manual]
- VDDSOC Voltage Override [1.10000]
DRAM Voltage [1.43000]
VDDG CCD Voltage Control [1.075]
VDDG IOD Voltage Control [1.075]
CLDO VDDP voltage [1.100]
1.00V SB Voltage [Auto]
1.8V PLL Voltage [Auto]
AMD CPU fTPM [Disable]
Erase fTPM NV for factory reset [Enabled]
PSS Support [Enabled]
PPC Adjustment [PState 0]
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SMT Mode [Auto]
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Hot Plug [Disabled]
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ASM1074_1 Controller [Enabled]
ASM1074_2 Controller [Enabled]
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PCIEX16_1 Mode [Auto]
PCIEX16_2 Mode [Auto]
PCIEX1 Mode [Auto]
PCIEX16_3 Mode [Auto]
M.2_1 Link Mode [Auto]
M.2_2 Link Mode [Auto]
SB Link Mode [Auto]
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U32G2_3 [Enabled]
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Chassis Fan 1 Speed Low Limit [200 RPM]
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OS Type [Other OS]
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DIMM Slot Number [DIMM_A1]
Bus Interface [PCIEX16_1]
Download & Install ARMOURY CRATE app [Enabled]
CPU Frequency [0]
CPU Voltage [0]
Core control [Auto]
SMT Control [Auto]
Overclock [Auto]
Power Down Enable [Auto]
Cmd2T [Auto]
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VDDP Voltage Control [Auto]
VDDG Voltage Control [Auto]
NUMA nodes per socket [Auto]
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Core Performance Boost [Auto]
Global C-state Control [Auto]
DRAM ECC Enable [Auto]
Indirect Branch Prediction Speculation [Auto]
DRAM scrub time [Auto]
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Redirect scrubber limit [Auto]
NUMA nodes per socket [Auto]
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GMI encryption control [Auto]
xGMI encryption control [Auto]
CAKE CRC perf bounds Control [Auto]
4-link xGMI max speed [Auto]
3-link xGMI max speed [Auto]
xGMI TXEQ Mode [Auto]
Disable DF to external downstream IP SyncFloodPropagation [Auto]
Disable DF sync flood propagation [Auto]
CC6 memory region encryption [Auto]
Memory Clear [Auto]
Overclock [Auto]
Power Down Enable [Auto]
Cmd2T [Auto]
Gear Down Mode [Auto]
CAD Bus Timing User Controls [Auto]
CAD Bus Drive Strength User Controls [Auto]
Data Bus Configuration User Controls [Auto]
Data Poisoning [Auto]
DRAM Post Package Repair [Default]
RCD Parity [Auto]
DRAM Address Command Parity Retry [Auto]
Write CRC Enable [Auto]
DRAM Write CRC Enable and Retry Limit [Auto]
Disable Memory Error Injection [True]
DRAM ECC Symbol Size [Auto]
DRAM UECC Retry [Auto]
TSME [Auto]
Data Scramble [Auto]
DFE Read Training [Auto]
FFE Write Training [Auto]
PMU Pattern Bits Control [Auto]
MR6VrefDQ Control [Auto]
CPU Vref Training Seed Control [Auto]
Chipselect Interleaving [Auto]
BankGroupSwap [Disabled]
BankGroupSwapAlt [Enabled]
Address Hash Bank 2 ColXor [3f8]
Address Hash Bank [Auto]
Address Hash CS [Auto]
Address Hash Rm [Auto]
SPD Read Optimization [Enabled]
MBIST Enable [Disabled]
Pattern Select [PRBS]
Pattern Length [3]
Aggressor Channel [1 Aggressor Channel]
Aggressor Static Lane Control [Disabled]
Target Static Lane Control [Disabled]
Worst Case Margin Granularity [Per Chip Select]
Read Voltage Sweep Step Size [1]
Read Timing Sweep Step Size [1]
Write Voltage Sweep Step Size [1]
Write Timing Sweep Step Size [1]
IOMMU [Auto]
Precision Boost Overdrive [Auto]
Precision Boost Overdrive Scalar [Auto]
FCLK Frequency [Auto]
SOC OVERCLOCK VID [0]
UCLK DIV1 MODE [Auto]
VDDP Voltage Control [Auto]
VDDG Voltage Control [Auto]
SoC/Uncore OC Mode [Auto]
LN2 Mode [Auto]
ACS Enable [Auto]
PCIe ARI Support [Auto]
PCIe ARI Enumeration [Auto]
PCIe Ten Bit Tag Support [Auto]
Max Voltage Offset [Auto]
cTDP Control [Auto]
EfficiencyModeEn [Auto]
Package Power Limit Control [Auto]
APBDIS [Auto]
DF Cstates [Auto]
CPPC [Auto]
CPPC Preferred Cores [Auto]
NBIO DPM Control [Auto]
Early Link Speed [Auto]
Preferred IO [Auto]
CV test [Auto]
Loopback Mode [Auto]
Data Link Feature Exchange [Disabled]

Thanks again!

Baio

[Baio73]

That was my fallback position with the BIOS, still fails over time. Try 1302 if you want some stabilty back and hit ASUS support with a ticket. maybe the wieght of them might make them evaulate the problem.

Especially because with BIOS 2103 Asus stated to have implemented RAM stability improvements (if I remember correctly).

Baio

[Dicehunter]

Especially because with BIOS 2103 Asus stated to have implemented RAM stability improvements (if I remember correctly).

Baio

With 2103 my ram is unstable and goes below its rated 1.35v, Usually 1.33-1.34v, Resulting in random resets and freezes.

[slice313]

Thanks Slice, very kind!!
I post all, maybe it can be usefull for someone else:

[2020/07/30 11:10:59]

...........................................

Baio

First thing I noticed, you are using 4 modules of RAM, which sometimes causes problems and requires of "more tinkering".

Lets try first tuning your timings, I posted a screenshot of the Ryzen Mem Calculator with the settings you should try 1st.

CAUTION, don't use the recommended or maximum values voltages for the DRAM ---> USE 1.45 and, if it stable, lower it step by step (1.44, 1.43, 1.42, 1.41) until 1.41 as your lowest voltage, IF stable. To ensure you have stable memory I recommend Karhu MemTest (or HCI Memtest if you don't want to pay for the Karhu memtest).The Karhu memtest is faster (which is important if you don't want to spent all your day testing one set of timings) I recommend a 6500% coverage to ensure enough stability (around an hour and forty minutes for the Ryzen 3900X)

Definitely lower your VDDG CCD, VDDG IOD and CLDO VDDP voltages to the recommended values -> (1.000 - 1.000 - 0.950) REMEMBER that if you are using the 1302 or lower BIOS , there is an ASUS bug where you have to input the CLDO VDDP voltage as "950" and NOT "0.950" (since it is impossible, since it is an ASUS BIOS and thus -> ****)

"Gear down mode" should always be enabled unless you already have a stable system and want to tinker further. Use the recommended values for everything except for the DRAM voltage and tRFC. For tRFC use:

tRFC -> 302
tRFC2 -> 224
tRFC4 -> 138

After you have a stable system you could try these:

tRFC -> 288
tRFC2 ->213
tRFC4 ->131

Good luck!

PD: And if you are desperate, remove 2 ram modules and retest with only 16 GB of RAM. REMEMBER to only use B2 and A2 DRAM slots !

[Baio73]

First thing I noticed, you are using 4 modules of RAM, which sometimes causes problems and requires of "more tinkering".

Lets try first tuning your timings, I posted a screenshot of the Ryzen Mem Calculator with the settings you should try 1st.

CAUTION, don't use the recommended or maximum values voltages for the DRAM ---> USE 1.45 and, if it stable, lower it step by step (1.44, 1.43, 1.42, 1.41) until 1.41 as your lowest voltage, IF stable. To ensure you have stable memory I recommend Karhu MemTest (or HCI Memtest if you don't want to pay for the Karhu memtest).The Karhu memtest is faster (which is important if you don't want to spent all your day testing one set of timings) I recommend a 6500% coverage to ensure enough stability (around an hour and forty minutes for the Ryzen 3900X)

Definitely lower your VDDG CCD, VDDG IOD and CLDO VDDP voltages to the recommended values -> (1.000 - 1.000 - 0.950) REMEMBER that if you are using the 1302 or lower BIOS , there is an ASUS bug where you have to input the CLDO VDDP voltage as "950" and NOT "0.950" (since it is impossible, since it is an ASUS BIOS and thus -> ****)

"Gear down mode" should always be enabled unless you already have a stable system and want to tinker further. Use the recommended values for everything except for the DRAM voltage and tRFC. For tRFC use:

tRFC -> 302
tRFC2 -> 224
tRFC4 -> 138

After you have a stable system you could try these:

tRFC -> 288
tRFC2 ->213
tRFC4 ->131

Good luck!

PD: And if you are desperate, remove 2 ram modules and retest with only 16 GB of RAM. REMEMBER to only use B2 and A2 DRAM slots !

Thanks for your help, I'm gonna give those values a try.
At the moment I can say this values are quite more conservative towards the ones that Calculator gives me... is there any chance I can run my RAM @3600 CAS 14 as I used to do before bios 2103?

Baio

EDIT
No way, Karhu finds an error after a few minutes...
Forgot to say myu RAM is not a 4x8Gb kit, they are 1 F4-4000C17-8GTZR and 1 F4-4133C19-8GTZR. Thaiphoon output is exactly the same for both kits.

[slice313]

Thanks for your help, I'm gonna give those values a try.
At the moment I can say this values are quite more conservative towards the ones that Calculator gives me... is there any chance I can run my RAM @3600 CAS 14 as I used to do before bios 2103?

Baio

EDIT
No way, Karhu finds an error after a few minutes...
Forgot to say myu RAM is not a 4x8Gb kit, they are 1 F4-4000C17-8GTZR and 1 F4-4133C19-8GTZR. Thaiphoon output is exactly the same for both kits.

Thaiphoon isn't 100% infallible, while they may use the same memory chips, variation between the two kits could render them incompatible between each other at tight or sightly timing configurations... plus we don't really know if the PCB configuration is exactly the same, which is also an HUGE factor.

Do yourself a favor and try the kits independently, if Karhu gives error, it is either not stable or a faulty module. If you have suspicious of a faulty module, you should test at stock values, use the XMP profile with a small bump on the DRAM voltage to avoid ASUS quality BIOS from sabotaging your testing (1.36 or 1.37)

Good luck, you are close to fix your issues.

[Baio73]

Thaiphoon isn't 100% infallible, while they may use the same memory chips, variation between the two kits could render them incompatible between each other at tight or sightly timing configurations... plus we don't really know if the PCB configuration is exactly the same, which is also an HUGE factor.

Do yourself a favor and try the kits independently, if Karhu gives error, it is either not stable or a faulty module. If you have suspicious of a faulty module, you should test at stock values, use the XMP profile with a small bump on the DRAM voltage to avoid ASUS quality BIOS from sabotaging your testing (1.36 or 1.37)

Good luck, you are close to fix your issues.

I got the 2 kits in different moments, so I could test them both separetely then together... and always worked well (tested with MemTest, I got a license of Karhu only recently).
But I'm gonna give it a try...

Baio

[RedSector73]

The level of support for this board with x4 RAM configurations is shameful to be honest. Was playing with MSI board last night and seriously about time the ASUS Bios guys pulled there finger out and spent the time validating RAM to work correctly.