Updated 19 October 2026.
AMD integrated graphics use system memory, but not every graphics-memory number means that amount of RAM has permanently disappeared. Before changing firmware settings, distinguish the fixed reservation from memory Windows can share when applications need it.
Read the memory figures in context
| Figure | What it means |
|---|---|
| Installed RAM | The memory physically fitted or built into the system. |
| Hardware-reserved memory | Memory unavailable for normal Windows allocation; graphics can be one contributor. |
| Dedicated GPU memory on an integrated GPU | Can reflect a firmware-reserved part of system memory. |
| Shared GPU memory | Memory the graphics system can use dynamically; the displayed capacity is not necessarily current usage. |
Microsoft‘s explanation of GPU memory in Task Manager describes the distinction between dedicated and shared memory. Compare actual usage as well as the capacity displayed after the slash.
Start with Auto
AMD’s UMA frame-buffer guidance says the default Auto setting normally does not need adjustment. Increasing a reservation is not a universal graphics-speed upgrade, and reducing it is not a guaranteed way to cure every memory shortage.
The motherboard or PC maker controls which options its firmware exposes. A laptop can omit a manual UMA setting entirely. Registry utilities cannot create a supported firmware option that the manufacturer has not provided.
If you have a specific reason to change it
- Confirm the PC or motherboard model and read its manual.
- Record the current graphics-memory value and the symptoms you are addressing.
- Find the documented UMA Frame Buffer or integrated-graphics memory setting.
- Change only that setting, using a supported value.
- Restart and compare the same applications and memory figures.
Do not copy a screenshot’s menu path or allocation from another motherboard. If a game checks a reported dedicated-memory value, consult its requirements and AMD’s guidance; setting the smallest value may produce a warning without solving the actual bottleneck.
Keep a way back
Restore the recorded setting or Auto if the change causes errors or does not help. Avoid disabling integrated graphics merely to recover a small reservation. The display connection and the computer’s graphics design matter, particularly on laptops.
Our integrated-graphics firmware guide explains that separate decision and its prerequisites. It is not a required step for adjusting a frame buffer.
Newer memory controls are not the same feature
Some newer AMD platforms offer different graphics-memory allocation controls. AMD’s Variable Graphics Memory explanation covers that platform-specific feature. Do not apply its large allocations or menu instructions to an older Ryzen APU.
If the system is genuinely short of RAM, also review running apps and the manufacturer’s supported upgrade options. A graphics-reservation tweak cannot replace physical memory needed by the overall workload.
FAQs
Is shared GPU memory permanently taken from Windows?
The displayed shared capacity is not the same as current allocation. Check actual usage.
Should I always set UMA to the minimum?
No. Auto is AMD’s normal baseline; change it only for a specific supported reason.
Why can’t I find the setting on my laptop?
The manufacturer may not expose a manual control.
Does a larger reservation create more RAM?
No. It changes how part of the existing system memory is allocated.