Accepted Solutions
I have managed to run the 3rd RMA set of Corsair Vengeance RGB PRO 3200 4x16GB kit at 3200MHz and pass MemTest86.
Here is a shot of ASUS BIOS showing the CPU and Memory Frequency used:
Here is a screenshot showing passing MemTest86 Tests 1 to 10 with a Single Pass. It also passes a 4 Pass Run including the Hammer Test 13.
Looking at the Ryzen Specifications:
AMD Ryzen™ 7 2700X
See:
2nd Gen Ryzen™ 7 2700X Desktop Processor | AMD
I set up MemTest86 tests to run at the highest Max Boost Clock 4.3GHz
You need to be careful to have BIOS settings which will also pass MemTest86 at Base Clock 3.7GHz.
Lower Clock frequency would usually imply less noise and it would not be unreasonable to assume that passing MemTest86 at Max Boost Clock 4.3GHz
would mean you will also pass MemTest 86 at Base Clock 3.7GHz. This was not the case. When I dropped the clock multiplier in BIOS from 43 to 37 and I ran MemTest86 it failed with many Test 7 errors.This has serious implications for users of AISUITE III within Windows 10 if a User were to drop the Clock Multiplier from within Windows 10 from 43 to 37 using the AISUITEIII TPU menu for example. The User could end up running at a CPU clock frequency which is in fact causing memory failures which could wreck their Windows 10 OS or at the very least cause BSOD's. I made further adjustments in the ASUS BIOS settings so that MemTest86 passes at both Base Clock 3.7 GHz and
The MemTest86 screenshot above at 4326 MHz is actually using the adjusted settings which pass MemTest86 at both frequencies.
I drop the Clock multiplier from 43 to 37 in BIOS, reboot and run MemTest86 again.
Here is a screenshot showing passing MemTest86 at 3.7GHz . Note this passes Test 13 Hammer test as well but that is not shown in this screenshot.
Adjusting BIOS settings to achieve the above was difficult.
I am now able to report back to Corsair and ASUS to tell them that this 3rd RMA set of Corsair Vengeance RGB PRO 3200 4x16GB kit can indeed run at it's rated speed of 3200MHz on Ryzen 2700x with Asus ROG Crosshair Hero VII (Wifi) motherboard and pass MemTest86 at Ryzen 2700x specified Base and Boost Clocks.
I will supply the BIOS User Settings file to both ASUS and Corsair for their inspection.
Corsair have told me they are unable to run Failure Analysis on the previous two RAM kits which failed MemTest86 with default ASUS BIOS settings and frequency when run at SPD 1.2 volt profile running at 2133MHz.
I will continue to request that Corsair do something to fix their Ram Selector.
Hopefully AMD, Asus, Corsair and other Ram manufacturers can work together to seriously improve memory compatibility and profiles for next generation Ryzen products.
This RAM issue has cost me time and money to resolve. It has been difficult to debug and MemTest86 runtimes on Ryzen2700x are long.
I have opened a couple of separate posts related to this issue.
https://community.amd.com/thread/238460
and
https://community.amd.com/thread/238459
Thanks again to everyone who responded to this post and gave advice.
I now mark this as Correct Answer.
Hi,
Thanks for replying.
I have been in discussion with Asus Customer Support and Corsair about this problem over the past two days.
I have support cases open with both Asus and Corsair about this.
I had to remiove and prepare the RMA return of the second RAM Kit (Corsair Vengeance RGB Pro 3200MHz 4 x 16GB) end yesterday and it was picked up early today.
I did not get a chance to prepare the Ryzen Master Data etc you requested but I will do so once I get the the RMA replacement set.
Just to clarify the situation.
I have been running Memtest 86 with default BIOS settings and Asus BIOS hardware monitor reports 2133MHz RAM frequency.
For the first kit I purchased using Corsair memory selector - Vengeance RGB 4x16GB 3200MHz Modules.
I tested each individual16GB stick in the Asus ROG Crosshair Hero VII (Wifi) Motherboard slot DIMM_A2 as shown below in the motherboard manual.
Three of the four 16GB sticks passed Memtest 86 without any problem at default BIOS Setiings.
The fourth stick failed when tested with Memtest86 in DIMM_A2 with 3 Test 8 Errors [Random number sequence]
I was able to pass Memtest 86 with the remaining 3 Ram Sticks (48GB) occupying:
DIMM_A2, DIMM_B2 + DIMM_A1
and
DIMM_A2, DIMM_B2 + DIMM_B1
It simply looked like I had a single failing RAM Stick running the ASUS motherboard + Ryzen 2700x + DRAM at default BIOS settings.
I requested if Corsair could simply replace 1 of the sticks by sending me a replacement stick as close as possible to the RAM used in the kit.
Unfortunately that is not possible. I had to RMA the entire kit.
The replacement kit was a set of Corsair Vengeance RGB Pro 3200MHz 4 x 16GB - (note Pro which is a newer version of the kit I had, same spec, better individually addressable RGB lighting control,.
In that case 3 of the four sticks failed Memtest86 tested at default ASUS Motherboard BIOS settings.
I had to run multiple Memtest86 results again and report those to Corsair to get the second RMA approved.
So as far as I understand it I have not been pushing the RAM frequencies at all, and yet the memory is failing Memtest86.
Again I thank you for your help and suggestions so far.
If you think I am doing something wrong in testing so far please let me know. This is my first AMD PC build in years so I may be missing something.
I will report more data when I receive the new RAM Modules.
I may have just been unlucky and been hit with two bad batches of RAM in a row.
Bye.
