X370 DDR4 memory dragging it's feet

I upgraded to BIOS 5.6, no change.

I'm stumped. I have no idea why the BIOS chooses the slowest possible speed for my DDR4 memory.

cx5 wrote: Hello @luminarycrush You'll need to read this = https://www.techpowerup.com/review/amd-ryzen-memory-tweaking-overclocking-guide/ and use = https://www.techpowerup.com/download/ryzen-dram-calculator/ and follow this = https://www.overclock.net/threads/new-dram-calculator-for-ryzen%E2%84%A2-1-7-3-overclocking-dram-on-am4-membench-0-8-dram-bench.1640919/page-517 Come back again after studying above and we can help you more accurately.

Thank you for your response. I'd like to ask what may be a dumb question - I didn't think I was trying to overclock the memory, I was just trying to "clock" it - set it to it's advertised performance. Is what you sent appropriate for non-overclock BIOS settings for memory? I haven't build a machine in awhile, but not so many years ago you'd just set the memory speed appropriately per manufacturer's specs.

I will read the information you sent regardless, but wanted to get my head straight first.

I don't run Windows (though I have a VM, not sure if that tool will work in it). I did manage to extract this from Linux tools, which appears to conflict what the memory advertises and is printed on the stickers:


---=== SPD EEPROM Information ===---
EEPROM CRC of bytes 0-125                        OK (0x242D)
# of bytes written to SDRAM EEPROM               384
Total number of bytes in EEPROM                  512
Fundamental Memory type                          DDR4 SDRAM
SPD Revision                                    1.1
Module Type                                      UDIMM
EEPROM CRC of bytes 128-253                      OK (0xA01C)

---=== Memory Characteristics ===---
Maximum module speed                             2132 MHz (PC4-17000)
Size                                             8192 MB
Banks x Rows x Columns x Bits                    16 x 16 x 10 x 64
SDRAM Device Width                               8 bits
Ranks                                           1
AA-RCD-RP-RAS (cycles)                           15-15-15-36
Supported CAS Latencies                          16T, 15T, 14T, 13T, 12T, 11T, 10T

---=== Timings at Standard Speeds ===---
AA-RCD-RP-RAS (cycles) as DDR4-1866              13-13-13-31
AA-RCD-RP-RAS (cycles) as DDR4-1600              11-11-11-27

---=== Timing Parameters ===---
Minimum Cycle Time (tCKmin)                      0.938 ns
Maximum Cycle Time (tCKmax)                      1.600 ns
Minimum CAS Latency Time (tAA)                   13.750 ns
Minimum RAS to CAS Delay (tRCD)                  13.750 ns
Minimum Row Precharge Delay (tRP)               13.750 ns
Minimum Active to Precharge Delay (tRAS)        33.000 ns
Minimum Active to Auto-Refresh Delay (tRC)       46.750 ns
Minimum Recovery Delay (tRFC1)                   350.000 ns
Minimum Recovery Delay (tRFC2)                   260.000 ns
Minimum Recovery Delay (tRFC4)                   160.000 ns
Minimum Four Activate Window Delay (tFAW)        21.000 ns
Minimum Row Active to Row Active Delay (tRRD_S) 3.700 ns
Minimum Row Active to Row Active Delay (tRRD_L) 5.300 ns
Minimum CAS to CAS Delay (tCCD_L)               5.625 ns
Minimum Write Recovery Time (tWR)               15.000 ns
Minimum Write to Read Time (tWTR_S)              2.500 ns
Minimum Write to Read Time (tWTR_L)              7.500 ns

---=== Other Information ===---
Package Type                                    Monolithic
Maximum Activate Count                           Unlimited
Post Package Repair                             One row per bank group
Soft PPR                                         Supported
Module Nominal Voltage                           1.2 V
Thermal Sensor                                   No

---=== Physical Characteristics ===---
Module Height                                    32 mm
Module Thickness                                 2 mm front, 2 mm back
Module Reference Card                            A revision 1

---=== Manufacturer Data ===---
Module Manufacturer                             G Skill Intl
DRAM Manufacturer                                SK Hynix (former Hyundai Electronics)
Part Number                                      F4-3200C16-8GTZR


Number of SDRAM DIMMs detected and decoded: 4

That's some good info cx5. Can you tell me where to look for FCLK settings on an X570 Taichi? Nothing looks obvious to me.

Don't have that in my BIOS under tweaker.

Nope, don't have that in the BIOS I'm running. P3.61.