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| Report Date | 2026-01-31 03:14:16 |
| Generated by |
MemTest86 V11.6 Pro (64-bit) |
| Result | FAIL |
| EFI Specifications | 2.70 |
| System | |
| Manufacturer | To Be Filled By O.E.M. |
| Product Name | B550 Taichi |
| Version | To Be Filled By O.E.M. |
| Serial Number | To Be Filled By O.E.M. |
| BIOS | |
| Vendor | American Megatrends International, LLC. |
| Version | P3.90 |
| Release Date | 09/30/2025 |
| Baseboard | |
| Manufacturer | ASRock |
| Product Name | B550 Taichi |
| Version | |
| Serial Number | M80-D6026000256 |
| CPU Type | AMD Ryzen 7 5800X 8-Core |
| CPU Clock | 3794 MHz [Turbo: 4667.1 MHz] |
| # Logical Processors | 16 (8 enabled for testing) |
| L1 Cache | 16 x 64K (276717 MB/s) |
| L2 Cache | 16 x 512K (103806 MB/s) |
| L3 Cache | 1 x 32768K (55241 MB/s) |
| Memory | 16321M (26852 MB/s) |
| RAM Configuration | DDR4 3600MT/s / x1 Channel / 16-19-19-39 / 1.200V |
| Number of RAM SPDs detected | 1 |
| SPD #0 | 16GB DDR4 XMP 2Rx8 PC4-28800 |
| Vendor Part Info | G Skill Intl / F4-3600C16-16GTZNC |
| JEDEC Profile | 2134MT/s 15-15-15-36 1.2V |
| XMP Profile 1 | 3602MT/s 16-19-19-39 1.35V |
| Number of RAM slots | 4 |
| Number of RAM modules | 1 |
| DIMM A1 | Empty slot |
| DIMM A2 | 16GB DDR4 2R PC4-28800 |
| Vendor Part Info | Unknown / F4-3600C16-16GTZNC / 00000000 |
| SMBIOS Profile | 3600MT/s 1.2V |
| DIMM B1 | Empty slot |
| DIMM B2 | Empty slot |
| Test Start Time | 2026-01-31 02:43:45 |
| Elapsed Time | 0:29:01 |
| Memory Range Tested | 0x0 - 440000000 (17408MB) |
| CPU Selection Mode | Parallel (All CPUs) |
| CPU Temperature Min/Max/Ave | 35C/66C/47C |
| RAM Temperature Min/Max/Ave | |
| TSOD0 | 33C/40C/36C |
| Lowest memory speed | 3600 MT/s (16-19-19-39) |
| Highest memory speed | 3600 MT/s (16-19-19-39) |
| # Tests Completed | 14/14 (100%) |
| # Tests Passed | 3/14 (21%) |
| Lowest Error Address | 0x16D641454 (5846MB) |
| Highest Error Address | 0x16F643C88 (5878MB) |
| Bits in Error Mask | 0A0000000A000000 |
| Bits in Error | 4 |
| Max Contiguous Errors | 1 |
| CPUs that detected memory errors | { 0, 8 } |
| . | . | . | . | x | . | x | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | x | . | x | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . |
| 63 | 0 |
| DIMM/Chip | Serial Number | # of Ranks | Errors | Result |
| DIMM A2 | 00000000 | 2Rx8 | 170 | FAIL |
| Unknown | 49 |
| Test | # Tests Passed | Errors |
| Test 0 [Address test, walking ones, 1 CPU] | 1/1 (100%) | 0 |
| Test 1 [Address test, own address, 1 CPU] | 1/1 (100%) | 0 |
| Test 2 [Address test, own address] | 1/1 (100%) | 0 |
| Test 3 [Moving inversions, ones & zeroes] | 0/1 (0%) | 6 |
| Test 4 [Moving inversions, 8-bit pattern] | 0/1 (0%) | 24 |
| Test 5 [Moving inversions, random pattern] | 0/1 (0%) | 36 |
| Test 6 [Block move, 64-byte blocks] | 0/1 (0%) | 49 |
| Test 7 [Moving inversions, 32-bit pattern] | 0/1 (0%) | 93 |
| Test 8 [Random number sequence] | 0/1 (0%) | 20 |
| Test 9 [Modulo 20, random pattern] | 0/1 (0%) | 2 |
| Test 10 [Bit fade test, 2 patterns, 1 CPU] | 0/1 (0%) | 2 |
| Test 11 [Random number sequence, 64-bit] | 0/1 (0%) | 17 |
| Test 12 [Random number sequence, 128-bit] | 0/1 (0%) | 12 |
| Test 13 [Hammer test] | 0/1 (0%) | 9 |
| Last 10 Errors |
| 2026-01-31 03:12:39 - [Data Error] Test: 13, CPU: 0, Address: 16D64251C/A2, Expected: 4E3C9BC4, Actual: 463C9BC4 (S/N: 00000000) |
| 2026-01-31 03:11:59 - [Data Error] Test: 13, CPU: 0, Address: 16D643F8C/A2, Expected: E5558FCA, Actual: E7558FCA (S/N: 00000000) |
| 2026-01-31 03:11:56 - [Data Error] Test: 13, CPU: 0, Address: 16D64251C/A2, Expected: 0BC5450E, Actual: 03C5450E (S/N: 00000000) |
| 2026-01-31 03:11:36 - [Data Error] Test: 13, CPU: 0, Address: 16D643F8C/A2, Expected: 795F1C5D, Actual: 7B5F1C5D (S/N: 00000000) |
| 2026-01-31 03:11:17 - [Data Error] Test: 13, CPU: 0, Address: 16D643E04/A2, Expected: AA9D8B1A, Actual: A89D8B1A (S/N: 00000000) |
| 2026-01-31 03:11:17 - [Data Error] Test: 13, CPU: 0, Address: 16D643A4C/A2, Expected: C972C0F4, Actual: CB72C0F4 (S/N: 00000000) |
| 2026-01-31 03:10:58 - [Data Error] Test: 13, CPU: 0, Address: 16D643F8C/A2, Expected: C0877A2F, Actual: C2877A2F (S/N: 00000000) |
| 2026-01-31 03:10:58 - [Data Error] Test: 13, CPU: 0, Address: 16D64251C/A2, Expected: CAD69483, Actual: C2D69483 (S/N: 00000000) |
| 2026-01-31 03:10:38 - [Data Error] Test: 13, CPU: 0, Address: 16D643E04/A2, Expected: 33EF5D94, Actual: 31EF5D94 (S/N: 00000000) |
| 2026-01-31 03:08:36 - [Data Error] Test: 12, CPU: 8, Address: 16D643800/A2, Expected: 43E308DAEA426555BF8B2358806D6555, Actual: 43E308DAEA426555BD8B2358806D6555 (S/N: 00000000) |
| Temporary workaround for Grub2 Linux: BadRAM filtering |
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For Unix-based distributions that use GRUB2 as a bootloader, BadRAM filtering can be used to exclude known defective memory addreses from being used by the operating system. This temporary workaround can be applied as follows:
GRUB_BADRAM="0x00000016D642000,0xFFFFFFFFFFFFE000,0x00000016D641000,0xFFFFFFFFFFFFF000,0x00000016F641000,0xFFFFFFFFFFFFF000,0x00000016F642000,0xFFFFFFFFFFFFE000"
sudo update-grub
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| Temporary workaround for Windows: badmemorylist filtering in BCD store |
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For Windows Vista and later, the Boot Configuration Data (BCD) store can be used to exclude physical page frames (PFN) from being used by the operating system. This temporary workaround can be applied as follows:
bcdedit /set {badmemory} badmemoryaccess no
bcdedit /set {badmemory} badmemorylist 0x16D642 0x16D643 0x16D641 0x16F641 0x16F642 0x16F643
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