What is the best mini PC for Monero mining?

For a performance-first Monero mini PC, I would shortlist the Minisforum MS-A2 with a Ryzen 9 7945HX. Its processor has the cores and cache that Monero mining needs, but it is not automatically the best buy: your electricity price, purchase cost, and its ability to stay cool matter more than a headline benchmark.

Why this processor stands out

Monero uses RandomX, a mining algorithm—the set of calculations your computer runs to help secure the network. It favors a computer’s main processor, or CPU, rather than its graphics processor.

The Ryzen 9 7945HX has 16 cores, 32 processing threads, and 64 MB of L3 cache, a small pool of very fast memory inside the processor. RandomX needs about 2 MB of L3 cache per mining thread, so this chip has a particularly useful balance of threads and cache.

That makes it a stronger mining candidate than many mini PCs built around ordinary laptop processors. However, the same chip can perform differently in different machines because of cooling and power limits.

Before ordering, check the exact processor listed. Similar-looking mini PCs can contain very different hardware.

What configuration you should buy

For a dedicated mining setup, prioritize these features:

• 16 GB of RAM across two memory modules. RAM is your computer’s working memory. Two modules can improve memory bandwidth, which matters for RandomX. More capacity alone does not guarantee faster mining.
• Strong, sustained cooling. Look for independent tests showing performance after a long workload, not just a short burst.
• Adjustable processor power limits. Running slightly slower can sometimes save enough electricity to improve your return.
• Wired networking and a basic SSD. A modest solid-state storage drive is enough. An expensive graphics card or huge drive adds little mining value.

RandomX’s fast mode uses a dataset of about 2,080 MB, plus other memory needs. Buying 32 or 64 GB solely for mining is usually unnecessary.

When a cheaper mini PC makes more sense

If you already own a Ryzen 7 7840HS or 8845HS mini PC, start there instead of buying another machine.

These processors have 16 MB of L3 cache. Using the 2 MB-per-thread guideline, roughly eight mining threads are a sensible starting point to test—even though the processor can run more software threads.

A discounted machine may offer better value than the MS-A2, especially if you also need it for everyday work. Very cheap Intel N-series boxes use little electricity, but low power consumption alone does not make them profitable miners.

Check real mining results before spending

Compare hashrate, meaning mining calculations per second, against electricity measured at the wall. Include the whole computer’s power use, not just the processor’s reported consumption.

Use a live mining calculator with your electricity rate and purchase price. No mini PC guarantees a profit.

If you plan to mine through a website, be especially careful: browser limits can make performance very different from dedicated mining software. A native RandomX benchmark is not a promise of browser earnings. Avoid services that guarantee returns or ask you to pay to unlock withdrawals.

The bottom line

The Ryzen 9 7945HX version of the Minisforum MS-A2 is a strong performance-first shortlist choice. Buy only after checking sustained cooling, wall-power measurements, and likely payback; testing a mini PC you already own is the safer first step.