Test 6 Only Errors, Steps Forward

[soupman]

Hi all,

I am having frequent machine freezes. I ran memtest overnight and saw errors only on Test 6. I will now attempt to test each RAM module one by one on Test 6 only.

How likely is it that it's a defective RAM module? The lowest and highest errors are spread through all of memory (0x6A56BC0 (106MB) - 0x831CD1D38 (33564MB)).

Are there other things I should try to debug? Thanks in advance. Summary

Report Date	2019-03-09 02:19:40
Generated by	MemTest86 V8.1 Free (64-bit)
Result	FAIL

System Information

EFI Specifications	2.10
System
Manufacturer	To be filled by O.E.M.
Product Name	To be filled by O.E.M.
Version	To be filled by O.E.M.
Serial Number	To be filled by O.E.M.
BIOS
Vendor	American Megatrends Inc.
Version	2501
Release Date	04/07/2014
Baseboard
Manufacturer	ASUSTeK COMPUTER INC.
Product Name	M5A99FX PRO R2.0
Version	Rev 1.xx
Serial Number	160468959200068
CPU Type	AMD FX-8350 Eight-Core
CPU Clock	4014 MHz [Turbo: 4114.1 MHz]
# Logical Processors	8
L1 Cache	8 x 80K (36120 MB/s)
L2 Cache	8 x 2048K (27251 MB/s)
L3 Cache	1 x 8192K (10174 MB/s)
Memory	32692M (7004 MB/s)
DIMM Slot #0	8GB DDR3 XMP PC3-17000
	G Skill Intl / F3-2133C9-8GTX
	9-11-11-31 / 2134 MHz / 1.600V
DIMM Slot #1	8GB DDR3 XMP PC3-17000
	G Skill Intl / F3-2133C9-8GTX
	9-11-11-31 / 2134 MHz / 1.600V
DIMM Slot #2	8GB DDR3 XMP PC3-17000
	G Skill Intl / F3-2133C9-8GTX
	9-11-11-31 / 2134 MHz / 1.600V
DIMM Slot #3	8GB DDR3 XMP PC3-17000
	G Skill Intl / F3-2133C9-8GTX
	9-11-11-31 / 2134 MHz / 1.600V

Result summary

Test Start Time	2019-03-08 04:10:19
Elapsed Time	17:45:58
Memory Range Tested	0x0 - 83F000000 (33776MB)
CPU Selection Mode	Single: CPU # 0
ECC Polling	Enabled
# Tests Passed	39/42 (92%)

Lowest Error Address	0x6A56BC0 (106MB)
Highest Error Address	0x831CD1D38 (33564MB)
Bits in Error Mask	00000000FF0000FF
Bits in Error	16
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]	0/3 (0%)	10060
Test 7 [Moving inversions, 32-bit pattern]	3/3 (100%)	0
Test 8 [Random number sequence]	3/3 (100%)	0
Test 9 [Modulo 20, ones & zeros]	3/3 (100%)	0
Test 10 [Bit fade test, 2 patterns, 1 CPU]	3/3 (100%)	0
Test 13 [Hammer test]	3/3 (100%)	0

Last 10 Errors

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5B18, Expected: 00000800, Actual: FF000800

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5B10, Expected: FFFFF7FF, Actual: 00FFF7FF

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5B08, Expected: 00000800, Actual: FF000800

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5AF8, Expected: FFFFFBFF, Actual: 00FFFBFF

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5AF0, Expected: 00000400, Actual: FF000400

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3DD5AE8, Expected: FFFFFBFF, Actual: 00FFFBFF

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3641E18, Expected: 00000200, Actual: FF000200

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3641E10, Expected: FFFFFDFF, Actual: 00FFFDFF

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3641E08, Expected: 00000200, Actual: FF000200

2019-03-08 21:56:17 - [Data Error] Test: 6, CPU: 0, Address: 2D3641DF8, Expected: FFFFFEFF, Actual: 00FFFEFF

Certification

[David (PassMark)]

How likely is it that it's a defective RAM module?

Bad RAM would still be my first guess.

[soupman]

Thank you for the quick reply. I ended up:

1) testing each RAM module one by one for test 6 only. They all passed.
2) testing each RAM module two by two for test 6 only. Again everything passed.
3) I started testing three of the four modules at a time and sure enough test 6 started failing again.

At this point I had a hunch it might be a BIOS issue. There was a setting to change the RAM from "Auto" to a manual setting. That seemed to fix the issue.

I then re-ran memtest with all four RAM modules for over 24 hours and I got zero issues. Knock on wood things look stable for the moment...