Memory Profiles (XMP and EXPO)

XMP (Intel Extreme Memory Profile) and EXPO (AMD Extended Profiles for Overclocking) are profiles stored on memory modules that let a motherboard run RAM at the kit's rated speed and timings instead of a conservative standard default.

1. Key points

Without a profile enabled, memory runs at baseline speeds defined by JEDEC standards.
Profiles are enabled in the motherboard BIOS/UEFI.
Stability depends on the CPU's memory controller, the motherboard and the number of modules.
Some tools display DDR memory at half its effective transfer rate.

2. Background

JEDEC sets the baseline memory standards that all compatible modules support. Manufacturers validate faster settings and store them in on-module profiles.

3. Troubleshooting

Update the BIOS, consult the board's memory support list, and use the recommended slots.

Memory Profiles (XMP and EXPO)

1. Key points

2. Background

3. Troubleshooting

See also

References

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