Question MemTest86 Errors on EXPO 1 – Voltage Discrepancy Between UEFI and MemTest

Aug 12, 2025
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Hi everyone, I’m running into an issue with my EXPO 1 profile. When I run MemTest86, it fails with 300+ errors. The RAM is on my motherboard’s QVL list.

EXPO 1 should be 6000 MT/s 30-36-36-76 at 1.35 V, but in MemTest86 it shows 6000 MT/s 30-36-36-76 at 1.10 V. The strange part is that in my UEFI it does show 1.35 V applied (pictures of both MemTest86 and UEFI attached).

So, is the voltage actually being applied wrong here? Should I manually set the EXPO 1 values, or am I misunderstanding how MemTest86 reports voltage?

For context, I got a pass in these cases:

EXPO 2: 5600 MT/s 40-40-40-84 at 1.20 V

Base JEDEC: 4800 MT/s 40-40-40-77 at 1.10 V

A custom setting I tested: 32-40-40-86 at 1.35 V

Any advice would be greatly appreciated — I’m new to PC building and troubleshooting this has been tricky.
 
Welcome to the forums, newcomer!

The RAM is on my motherboard’s QVL list.
Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

If your motherboard has 4 ram slots but you're working with 2 sticks of ram, what slots are they populating on said motherboard? A2 and B2?