System reports 128GB instead of the actual 256GB after Windows 11 setup.
System reports 128GB instead of the actual 256GB after Windows 11 setup.
At first, my computer ran smoothly with the 256GB RAM, as I recall expanding a Unreal project to test if it handled over 128GB. Now my recollection is different: roughly half is reserved for hardware, possibly hinting the issue began after switching from Windows 10 to 11 last week (and reinstalling). In BIOS I only adjust XMP settings to boost speed, but turning it off doesn’t help. I’ve gone through numerous guides suggesting ways to free up space or fix hardware limits, yet my motherboard’s memory list still shows the RAM isn’t recognized—though some similar models from Corsair appear unaffected. I’m concerned because the exact model isn’t showing up in any supported slots, even though others work. The OS is Windows 11 Home, 64-bit, AMD Ryzen Threadripper 3960X, running at 46°C with Castle Peak 7nm tech. RAM specs: 256GB DDR4 1600MHz. I’m using a Gigabyte TRX40 AORUS XTREME graphics card and an ASUS RTX 3090. No optical drives detected, audio via PC-USB shows up correctly in Speccy. Memory details look normal except for the unresponsive slot.
There's your problem https://learn.microsoft.com/en-us/window...s-releases Physical Memory Limits: Windows 11 The following table specifies the limits on physical memory for Windows 11. Version Limit on X64 Windows 11 Enterprise 6 TB Windows 11 Education 2 TB Windows 11 Pro for Workstations 6 TB Windows 11 Pro 2 TB Windows 11 Home 128 GB