Research-based guide. Steps come from the sources linked, not from our own testing. No affiliate links.

The short answer

Step 1: Read the speed in Task Manager

1. Press Ctrl + Shift + Esc and click More details if the window is small.
2. Open the Performance tab and select Memory.
3. Read the Speed figure at the lower right. Guiding Tech notes that recent Windows 11 builds show it in MT/s while older builds and Windows 10 label it MHz. The same panel shows how many slots are in use.

Memory sold as DDR5-6000 has an effective data rate of 6000 MT/s, while its real clock is about 3000MHz, because DDR memory transfers data twice per clock cycle (Guiding Tech). So a Task Manager reading of 6000 is correct for a DDR5-6000 kit, while a tool such as CPU-Z shows about half that as the DRAM frequency.

Step 2: Find your kit’s rated speed

Check the sticker on the modules, the product box or the retailer listing, and compare that number with Task Manager (Kudu). Boards use different names for the same idea: XMP on Intel, EXPO on AMD DDR5, and DOCP or A-XMP on some AMD boards.

Step 3 (optional): Compare rated and configured speed in PowerShell

Right-click the Start button, open Terminal or Windows PowerShell and run this command, as Guiding Tech suggests:

Get-CimInstance Win32_PhysicalMemory | Format-Table Manufacturer, PartNumber, Capacity, Speed, ConfiguredClockSpeed

Speed is what the module is capable of, and ConfiguredClockSpeed is what it is doing right now. If the second number is lower, check your BIOS settings and your motherboard and memory documentation.

Step 4: Turn on XMP or EXPO in the BIOS

1. Restart into the UEFI. In Windows go to Settings, System, Recovery, then Advanced startup and Restart now. After the restart choose Troubleshoot, Advanced options, UEFI Firmware Settings, then Restart.
2. Switch to Advanced Mode if needed and find the overclocking or memory section. Menu names include AI Tweaker, OC, Tweaker or Extreme Memory Profile.
3. Enable the profile: XMP Profile 1 for most Intel systems, EXPO Profile 1 for AMD DDR5 systems, or DOCP or A-XMP on some AMD boards.
4. Save and exit, usually with F10.
5. Boot into Windows and read Task Manager again to confirm the new speed.

This list follows Kudu’s guide, and the exact menu names vary by motherboard maker. Intel describes XMP profiles as preset combinations of speed, timing and voltage tested by the memory maker, applied automatically once you enable XMP in the BIOS. Its page also calls this overclocking and says results vary by system configuration. AMD describes EXPO as memory profiles that make DDR5 overclocking easier on Ryzen AM5 systems.

Intel says XMP works with Core Ultra and Core K-series desktop processors on motherboards that support it. If you have a laptop or a prebuilt PC, contact the manufacturer to confirm whether your model supports XMP.

Step 5: Check dual-channel

• Slots. Dual-channel needs two matching sticks in the correct pair of slots. On a standard board these are usually every other slot, and for two sticks Kudu says the right slots are often A2 and B2. Check your motherboard manual.
• Task Manager. Slots used tells you how many slots are occupied, not whether they form a channel pair.
• CPU-Z. The Memory tab shows the channel configuration. CGDirector explains that the format differs by memory type: DDR4 modules have one 64-bit channel each, while DDR5 modules have two 32-bit channels each, so the display differs between memory types and CPU-Z versions. Use it together with the slot check, not on its own.
• One stick. A single module cannot run dual-channel. CGDirector’s fix is to add an identical stick or replace it with a dual-channel kit. Laptops often ship this way, which we cover for one model in our Lenovo LOQ guide.

If it is still slow after enabling the profile

• Check the slots again and reseat the sticks firmly with the power off (Kudu).
• Update the motherboard BIOS. In Windows press Windows + R, type msinfo32 and note the BaseBoard Product and BIOS Version. Follow the maker’s update instructions, then enable the profile again (Kudu).
• Your CPU and board may not officially support the kit’s rated speed. If the PC crashes, fails to boot or resets the setting, try a lower profile if one is offered (Kudu).

Why it is worth five minutes

Kudu lists lower FPS or more stutter than expected among the symptoms of memory stuck at a default speed. We have not measured the difference, so treat the gain as unproven for your own setup. With RAM prices high, as explained in why PC parts cost so much in 2026, getting the speed you paid for is cheap insurance. For how much memory you need, see our RAM guide. If frame rate is the real problem, our guide to checking whether your CPU or GPU limits it is the next step, and our SSD guide covers the storage side.

Last checked 28 October 2026. We update this guide when Windows changes how Task Manager reports memory or when AMD or Intel change their profile standards. How we source our guides is explained on the About page.

Sources

• Guiding Tech: 4 different ways to test RAM speed (updated 7 September 2026)
• Kudu: how to fix RAM not running at XMP or EXPO speed (updated 16 March 2026)
• Intel: Extreme Memory Profile (XMP)
• AMD: EXPO technology
• CGDirector: how to check if your RAM is running in dual-channel (updated January 2024)