Does the MSR mod work on AMD Ryzen and Intel CPUs?

Yes—the MSR mod can work on both AMD Ryzen and Intel CPUs, but support and results depend on your exact processor. In XMRig, it changes certain processor settings to help RandomX, Monero’s mining algorithm, run more efficiently; it is not a guaranteed speed boost on every CPU.

What the MSR mod actually changes

MSR stands for model-specific register. These are special controls inside your CPU that software can use to change low-level behavior.

XMRig’s MSR feature adjusts settings such as hardware prefetching. Prefetching means your CPU tries to guess which data you will need next and loads it early. That helps many everyday tasks, but some of those guesses can be unhelpful for RandomX.

The MSR mod is not an overclock. It does not directly raise your CPU’s clock speed or unlock extra cores. It changes how supported parts of the processor behave while you mine.

How AMD Ryzen and Intel differ

XMRig includes MSR settings for supported AMD Ryzen and Intel processors, but the two brands do not use one universal set of values.

• AMD Ryzen: XMRig has settings tailored to supported AMD processor families. The benefit can be noticeable, but it varies between Ryzen generations and individual systems.
• Intel: Supported processors can also benefit from changes to prefetch settings. The improvement may be modest, and not every Intel model exposes the same controls.
• New or unusual CPUs: Do not assume support just because the chip says “Ryzen” or “Intel.” Use a recent official XMRig release and check its startup messages.

Avoid copying custom MSR values from a guide for a different CPU. A setting intended for one processor family may be unsuitable for another.

What you need to enable it

MSR access requires more permission than an ordinary application normally gets.

On Windows, XMRig generally needs to run as administrator and use a low-level driver to access these registers. Security features or driver-blocking rules may prevent that access.

On Linux, it generally needs root privileges or appropriately configured access to the system’s MSR interface. A kernel module—a component that adds operating-system functionality—called msr may be needed.

Virtual machines and restricted hosting environments often block MSR access. You should not weaken important security protections just to chase a small mining improvement.

This also matters if you mine through a website: a normal browser page cannot directly apply XMRig’s MSR mod. It is a feature of the native miner running on your computer, not a switch a browser miner can turn on.

How to tell whether it helps you

Check XMRig’s startup log for a message confirming that its MSR settings were applied. An access error does not necessarily stop mining; it means that optimization was not applied.

Then compare mining with and without the feature:

• Keep the same thread count and other settings.
• Let performance settle before comparing.
• Watch hashrate, the number of mining calculations per second.
• Compare power use and system stability, too.

A higher hashrate is not automatically better value if electricity use rises disproportionately.

The bottom line

The MSR mod supports both Ryzen and Intel on compatible systems. Your CPU model, operating-system permissions, and XMRig version determine whether it works—and a controlled test tells you whether it is worth using.