Problems with DDR4 RAM performance in Windows 11
Problems with DDR4 RAM performance in Windows 11
You're dealing with a complex setup and performance issues. It sounds like your system isn't reaching the advertised speeds due to several factors. The RAM appears to be showing only 20.3 GB, which might be a mismatch or a limitation in how it's being reported. The CPU and GPU configurations seem solid, but the RAM size could be limiting overall performance. The voltage reading of 1.392V suggests power delivery is stable, though not at the expected level. If you're experiencing lower speeds over time, it might be related to thermal throttling or driver issues. Trying different settings like XMP profiles or adjusting BIOS parameters could help. Also, ensure your RAM is compatible with the system and that all components are properly seated. Let me know if you need further guidance!
Checking available or total memory is important since Windows uses some of your memory for cache. Using around 10 GB after startup is typical and acceptable. Memory allocated for cache will become available when needed by running apps. This shouldn't be due to your RAM running at a lower speed than expected. You might want to review temperatures and GPU activity, though a CPU limit with a 5800X3D seems improbable.
The CPU speed of 3.40Ghz seems incorrect; it should be around 4.4Ghz per core with PBO enabled, and the base clock is actually 3.6Ghz. The 4000 RAM will function but not in full parallel mode. Adjusting to 3600CL16 and 1800FCLK could significantly improve performance.
Conditions are good—GPU stays under 65°C and CPU works well with an all-in-one cooler. Regarding MT/s and MHz, they measure clock speed, but actual performance depends on many factors beyond just numbers.
Check "In use" and "Available" together total 32GB. Skip the rest.
MT/s is the accurate specification. The RAM is built for 2000 MHz operation. Since DDR RAM operates at double data rates, its speed reaches 4000 MT/s. Many firms mistakenly claim it as 4000 MHz. Currently your RAM runs at 2666 MT/s or roughly 1333 MHz. Newer Windows updates typically show MT/s in the task manager—adjust if temperatures are acceptable. For better GPU monitoring while gaming, consider using Intel PresentMon or MSI Afterburner. With PresentMon you can track GPU and CPU activity as well.