On 4/18/19 8:05 PM, Jean Delvare wrote:
On Thu, 18 Apr 2019 18:19:46 +0300, Jarkko Nikula wrote:
Same system. Working set (two DIMMs) is Micron and failing set is
Crucial. Interestingly decode-dimm was able to parse also Crucial when
plugged in together with Micron and all of them probed with ee1004 but
not when there were 2* or 4* Crusial DIMMs alone.
Aha. This is very interesting, gives me an idea. Can you please provide
the output of "decode-dimms --side-by-side --merge-cells" of the
2*Micron + 2*Crucial setup?
Here attached.
--
Jarkko
# decode-dimms version $Revision$
Memory Serial Presence Detect Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare, Trent Piepho and others
Decoding EEPROM 0-0050 0-0051 0-0052 0-0053
Guessing DIMM is in bank 1 bank 2 bank 3 bank 4
---=== SPD EEPROM Information ===---
EEPROM CRC of bytes 0-125 OK (0xB586) OK (0xB586) OK (0x7174) OK (0x7174)
# of bytes written to SDRAM EEPROM 384
Total number of bytes in EEPROM 512
Fundamental Memory type DDR4 SDRAM
SPD Revision 1.0 1.0 1.1 1.1
Module Type UDIMM
EEPROM CRC of bytes 128-253 OK (0x0A79) OK (0x0A79) OK (0x1733) OK (0x1733)
---=== Memory Characteristics ===---
Maximum module speed 2132 MHz (PC4-17000) 2132 MHz (PC4-17000) 2400 MHz (PC4-19200) 2400 MHz (PC4-19200)
Size 4096 MB
Banks x Rows x Columns x Bits 16 x 15 x 10 x 64 16 x 15 x 10 x 64 8 x 16 x 10 x 64 8 x 16 x 10 x 64
SDRAM Device Width 8 bits 8 bits 16 bits 16 bits
Ranks 1
AA-RCD-RP-RAS (cycles) 15-15-15-36 15-15-15-36 17-17-17-39 17-17-17-39
Supported CAS Latencies 20T, 18T, 16T, 15T, 14T, 13T, 12T, 11T, 10T, 9T 20T, 18T, 16T, 15T, 14T, 13T, 12T, 11T, 10T, 9T 21T, 20T, 19T, 18T, 17T, 16T, 15T, 14T, 13T, 12T, 11T, 10T 21T, 20T, 19T, 18T, 17T, 16T, 15T, 14T, 13T, 12T, 11T, 10T
---=== Timings at Standard Speeds ===---
AA-RCD-RP-RAS (cycles) as DDR4-2400 N/A N/A 17-17-17-39 17-17-17-39
AA-RCD-RP-RAS (cycles) as DDR4-2133 N/A N/A 15-15-15-35 15-15-15-35
AA-RCD-RP-RAS (cycles) as DDR4-1866 13-13-13-31 13-13-13-31 13-13-13-30 13-13-13-30
AA-RCD-RP-RAS (cycles) as DDR4-1600 11-11-11-27 11-11-11-27 11-11-11-26 11-11-11-26
---=== Timing Parameters ===---
Minimum Cycle Time (tCKmin) 0.938 ns 0.938 ns 0.833 ns 0.833 ns
Maximum Cycle Time (tCKmax) 1.500 ns 1.500 ns 1.600 ns 1.600 ns
Minimum CAS Latency Time (tAA) 13.500 ns 13.500 ns 13.750 ns 13.750 ns
Minimum RAS to CAS Delay (tRCD) 13.500 ns 13.500 ns 13.750 ns 13.750 ns
Minimum Row Precharge Delay (tRP) 13.500 ns 13.500 ns 13.750 ns 13.750 ns
Minimum Active to Precharge Delay (tRAS) 33.000 ns 33.000 ns 32.000 ns 32.000 ns
Minimum Active to Auto-Refresh Delay (tRC) 46.500 ns 46.500 ns 45.750 ns 45.750 ns
Minimum Recovery Delay (tRFC1) 260.000 ns 260.000 ns 350.000 ns 350.000 ns
Minimum Recovery Delay (tRFC2) 160.000 ns 160.000 ns 260.000 ns 260.000 ns
Minimum Recovery Delay (tRFC4) 110.000 ns 110.000 ns 160.000 ns 160.000 ns
Minimum Four Activate Window Delay (tFAW) 23.000 ns 23.000 ns 30.000 ns 30.000 ns
Minimum Row Active to Row Active Delay (tRRD_S) 3.701 ns 3.701 ns 5.300 ns 5.300 ns
Minimum Row Active to Row Active Delay (tRRD_L) 5.300 ns 5.300 ns 6.400 ns 6.400 ns
Minimum CAS to CAS Delay (tCCD_L) 5.356 ns 5.356 ns 5.000 ns 5.000 ns
Minimum Write Recovery Time (tWR) N/A N/A 15.000 ns 15.000 ns
Minimum Write to Read Time (tWTR_S) N/A N/A 2.500 ns 2.500 ns
Minimum Write to Read Time (tWTR_L) N/A N/A 7.500 ns 7.500 ns
---=== Other Information ===---
Package Type Monolithic
Maximum Activate Count Unlimited
Post Package Repair Not supported Not supported One row per bank group One row per bank group
Soft PPR N/A N/A Supported Supported
Module Nominal Voltage 1.2 V
Thermal Sensor No
---=== Physical Characteristics ===---
Module Height 32 mm
Module Thickness 2 mm front, 2 mm back 2 mm front, 2 mm back 2 mm front, 1 mm back 2 mm front, 1 mm back
Module Reference Card B revision 0 B revision 0 C revision 0 C revision 0
---=== Manufacturer Data ===---
Module Manufacturer Crucial Technology Crucial Technology Micron Technology Micron Technology
DRAM Manufacturer Micron Technology
Manufacturing Location Code N/A N/A 0x0F 0x0F
Manufacturing Date N/A N/A 2016-W35 2016-W35
Assembly Serial Number 0xA80CD476 0xA0201F0C 0x13C5C25F 0x13C5C264
Part Number CT4G4DFS8213.C8FAR2 CT4G4DFS8213.C8FAR2 4ATF51264AZ-2G3B1 4ATF51264AZ-2G3B1
Revision Code N/A N/A 0x31 0x31
Number of SDRAM DIMMs detected and decoded: 4
