Memtest results I am confused :(

[smu]

Hello, I am really new to memtesting. Recently I bought a G.Skill F4-3200C14D-16GFX Flare X DDR4 3200Mhz CL14 16GB (2x8GB) from a guy. I start testing in my system. First test I got a single error in the picture. Second test I got no errors. I am confused. Should I test more?

[David (PassMark)]

It is possible the error was a one off "soft" error.
See,
https://en.wikipedia.org/wiki/Soft_e...of_soft_errors

But it equally possible the RAM is bad.
Further testing should show if it was random bad luck, or you have RAM that is functioning marginally.

See also
https://www.memtest86.com/troubleshooting.htm

[smu]

Thank you. I will test more maybe single stick at a time...

[smu]

So I got the same error again
Tried my other ram and have no errors Tridentz 3200 CL14

I am lost...

EFI Specifications	2.60
System
Manufacturer	System manufacturer
Product Name	System Product Name
Version	System Version
Serial Number	System Serial Number
BIOS
Vendor	American Megatrends Inc.
Version	3103
Release Date	06/17/2020
Baseboard
Manufacturer	ASUSTeK COMPUTER INC.
Product Name	ROG STRIX X470-I GAMING
Version	Rev 1.xx
Serial Number	180527603000306
CPU Type	AMD Ryzen 7 2700X Eight-Core
CPU Clock	3716 MHz [Turbo: 3716.0 MHz]
# Logical Processors	16
L1 Cache	16 x 96K (84374 MB/s)
L2 Cache	16 x 512K (67406 MB/s)
L3 Cache	1 x 16384K (34139 MB/s)
Memory	16306M (19873 MB/s)
Number of RAM SPDs detected	2
SPD #0	8GB DDR4 XMP PC4-25600
	G Skill Intl / F4-3200C14-8GFX
	14-14-14-34 / 3200 MHz / 1.350V
SPD #1	8GB DDR4 XMP PC4-25600
	G Skill Intl / F4-3200C14-8GFX
	14-14-14-34 / 3200 MHz / 1.350V
Number of RAM slots	2
Number of RAM modules	2
DIMM Slot #0	8GB DDR4 PC4-25600
	G Skill Intl / F4-3200C14-8GFX / 00000000
	3200 MHz
DIMM Slot #1	8GB DDR4 PC4-25600
	G Skill Intl / F4-3200C14-8GFX / 00000000
	3200 MHz

Result summary

Test Start Time	2020-12-11 22:00:42
Elapsed Time	2:35:44
Memory Range Tested	0x0 - 41F380000 (16883MB)
CPU Selection Mode	Parallel (All CPUs)
CPU Temperature Min/Max/Ave	49C/68C/59C
RAM Temperature Min/Max/Ave	-/-/-
ECC Polling	Enabled
# Tests Passed	44/45 (97%)

Lowest Error Address	0x4176613C8 (16758MB)
Highest Error Address	0x4176613C8 (16758MB)
Bits in Error Mask	0000000000000100
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]	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

2020-12-12 00:34:02 - [Data Error] Test: 8, CPU: 4, Address: 4176613C8, Expected: C05DBCEE, Actual: C05DBDEE

[David (PassMark)]

So I got the same error again
Tried my other ram and have no errors Tridentz 3200 CL14

Getting errors twice in the same test and same bit isn't random.
The RAM is bad. It is probably just 1 bit bad from a total of 137,281,536 bits, but you only need 1 bad bit to cause a problem.

[smu]

I see. Interesting part is other memtest software didnt give me any error... I guess I need to RMA but I dont have any proof of purchase since I got this from someone else...