Memtest86 v7.4 Asus Prime X370-Pro with 64gb HyperX RAM

[ryzen-x370-hyperx]

Hi everyone

Sharing hardware experiencie

My system:

- Motherboard Asus Prime X370-Pro BIOS 0902 AGESA 1.0.0.6b
- CPU AMD Ryzen 5 1600 (non X)
- RAM Kingston HyperX Fury DDR4 2400Mhz 15-15-15-35-55-2t HX424C15FB/16 x 4 = total 64gb

Custom BIOS settings before run Memtest86 v7.4:

- D.O.C.P enabled, and selected the only one profile offers by BIOS: D.O.C.P. DDR4-2400 15-15-15-35-1.20V, changed memory speed to 2666Mhz, changed DRAM Voltage to 1.35v
...and after memory settings



- Selected TPU II: this option runs automatic OC, default CPU clock is 3.20Ghz and TPU II up to 3.60Ghz.
- CSM (Compatibility Support Module) disabled
- SVM enabled
- RGB disabled

Default on all other BIOS values.


Test results of Memtest86 v7.4 after delete exceptions motherboard model into blacklist.cfg marking <#> at the beginning of the line:

Summary

Report Date	2017-10-14 12:32:56
Generated by	MemTest86 V7.4 Free (64-bit)
Result	FAIL

System Information

EFI Specifications	2.50
System
Manufacturer	System manufacturer
Product Name	System Product Name
Version	System Version
Serial Number	System Serial Number
BIOS
Vendor	American Megatrends Inc.
Version	0902
Release Date	09/08/2017
Baseboard
Manufacturer	ASUSTeK COMPUTER INC.
Product Name	PRIME X370-PRO
Version	Rev X.0x
Serial Number	XXXXXXXXXXX
CPU Type	AMD Ryzen 5 1600 Six-Core
CPU Clock	3594 MHz [Turbo: 3593.6 MHz]
# Logical Processors	12
L1 Cache	12 x 96K (58034 MB/s)
L2 Cache	12 x 512K (57037 MB/s)
L3 Cache	1 x 16384K (28978 MB/s)
Memory	65485M (18195 MB/s)
DIMM Slot #0	16GB DDR4 XMP PC4-19200
	Kingston / KHX2400C15/16G /
	15-15-15-35 / 2400 MHz / 1.200V
DIMM Slot #1	16GB DDR4 XMP PC4-19200
	Kingston / KHX2400C15/16G /
	15-15-15-35 / 2400 MHz / 1.200V
DIMM Slot #2	16GB DDR4 XMP PC4-19200
	Kingston / KHX2400C15/16G /
	15-15-15-35 / 2400 MHz / 1.200V
DIMM Slot #3	16GB DDR4 XMP PC4-19200
	Kingston / KHX2400C15/16G /
	15-15-15-35 / 2400 MHz / 1.200V

Result summary

Test Start Time	2017-10-13 22:33:57
Elapsed Time	13:54:26
Memory Range Tested	0x0 - 101F380000 (66035MB)
CPU Selection Mode	Parallel (All CPUs)
ECC Polling	Enabled
# Tests Passed	47/48 (97%)

Lowest Error Address	0xDEB7F4910 (57015MB)
Highest Error Address	0xDEB7F4910 (57015MB)
Bits in Error Mask	0000000000200000
Bits in Error	1
Max Contiguous Errors	1

Test	# Tests Passed	Errors
Test 0 [Address test, walking ones, 1 CPU]	4/4 (100%)	0
Test 1 [Address test, own address, 1 CPU]	4/4 (100%)	0
Test 2 [Address test, own address]	4/4 (100%)	0
Test 3 [Moving inversions, ones & zeroes]	4/4 (100%)	0
Test 4 [Moving inversions, 8-bit pattern]	4/4 (100%)	0
Test 5 [Moving inversions, random pattern]	4/4 (100%)	0
Test 6 [Block move, 64-byte blocks]	4/4 (100%)	0
Test 7 [Moving inversions, 32-bit pattern]	4/4 (100%)	0
Test 8 [Random number sequence]	3/4 (75%)	1
Test 9 [Modulo 20, ones & zeros]	4/4 (100%)	0
Test 10 [Bit fade test, 2 patterns, 1 CPU]	4/4 (100%)	0
Test 13 [Hammer test]	4/4 (100%)	0

Last 10 Errors

[Data Error] Test: 8, CPU: 11, Address: DEB7F4910, Expected: 5389F95A, Actual: 53A9F95A

My questions are:


that importance should I give this error?

Memtest86 perform test's based on JEDEC memory values or BIOS memory settings?



Thanks in advance for your support

[David (PassMark)]

1 error in 13 hours.

Likely it is a real hardware error, but you might have just got unlucky with a cosmic ray.

If it was repeatable, I would then try and narrow it down and swap the RAM stick.