cpumining.pro
Table/Blog/Best CPUs for Monero Mining: Realistic Profitability

Best CPUs for Monero Mining: Realistic Profitability

The honest picture

Most mining calculators show you the best-case scenario: maximum hashrate on a perfectly tuned system, zero losses, cheap electricity. Reality is different.

At cpumining.pro we use typical hashrates (not peak), account for pool fees and stale shares, and calculate costs for a complete system — not just the CPU. This article breaks down the best CPUs for Monero mining with real numbers.

How we measure

Our methodology (detailed on the methodology page):

  • Hashrate: median from xmrig benchmarks × 0.80 discount (consumer) or × 0.88 (server). Benchmarks are 60-second bursts — sustained 24/7 mining is lower
  • Power consumption: CPU mining watts + 35W system overhead (consumer) or 50W (server), divided by 0.85 PSU efficiency
  • Income: averaged over 24 hours of network snapshots (difficulty, price, reward)
  • System cost: full build with used components — CPU, motherboard, RAM (dual channel), SSD, PSU

Top CPUs ranked by efficiency

Efficiency (income per watt) is the fairest metric — it doesn't depend on your electricity rate and shows which CPU extracts the most value from each watt of power.

Tier 1: Best efficiency

AMD Ryzen 5 5600X — the king of efficiency

  • Hashrate: 8,500 H/s
  • System power: 121W
  • System cost: ~$210 (used)
  • Why: 32 MB L3 is enough for all 12 threads, low 68W mining power draw, cheap used price on AM4

AMD Ryzen 9 5900X — best absolute hashrate (consumer)

  • Hashrate: 12,500 H/s
  • System power: 171W
  • System cost: ~$333 (used)
  • Why: 64 MB L3, 12 cores, excellent sustained hashrate. Verified on our hardware

AMD Ryzen 7 5800X — middle ground

  • Hashrate: 9,600 H/s
  • System power: 171W
  • System cost: ~$250 (used)
  • Why: 32 MB L3, 8 cores. Good hashrate but same power draw as 5900X — less efficient

Tier 2: Decent options

AMD Ryzen 7 5800X3D — the cache monster

  • Hashrate: 10,000 H/s
  • System power: 171W
  • System cost: ~$351 (used)
  • Why: 96 MB L3 cache, but for RandomX the extra V-Cache doesn't translate to proportionally higher hashrate. The 5800X3D is better for gaming than mining

AMD Ryzen 7 7700X — Zen 4

  • Hashrate: 9,200 H/s
  • System power: 171W
  • System cost: ~$411 (used)
  • Why: Newer platform (AM5, DDR5) means higher system cost. Hashrate isn't significantly better than Zen 3

Tier 3: Budget options

Intel Core i7-12700

  • Hashrate: 5,600 H/s
  • System power: 121W
  • System cost: ~$310 (used)
  • Why: P-cores only mine effectively (E-cores have small L2). Lower hashrate per dollar than AMD Zen 3

Intel Core i5-12400 / i5-13400

  • Hashrate: 3,600–3,650 H/s
  • System power: 121W
  • System cost: ~$232–256 (used)
  • Why: Cheapest entry point. Low hashrate, but low system cost too. Efficiency is poor compared to AMD

Server tier

AMD EPYC 7742 — maximum hashrate

  • Hashrate: 44,000 H/s
  • System power: 311W
  • System cost: ~$940 (used)
  • Why: 64 cores, 256 MB L3. Enormous hashrate but requires expensive server platform (SP3 motherboard, DDR4 ECC). Makes sense only if you already have the hardware or can get it cheap

Intel Xeon E5-2683 v4 / E5-2690 v4

  • Hashrate: 6,600–6,634 H/s
  • System power: ~193–209W
  • System cost: ~$167–179 (used)
  • Why: Very cheap on the used market. LGA 2011-3 systems can be had for almost nothing. But power efficiency is poor — old 14nm silicon with high idle overhead

The AM4 advantage

AMD's Zen 3 on AM4 dominates CPU mining because:

  1. Used prices have dropped — Zen 3 is two generations old, flooding the used market
  2. Large L3 cache per core — 32–64 MB is perfect for RandomX's 2 MB per thread
  3. Low power consumption — 65–105W TDP with efficient 7nm silicon
  4. Cheap platform — AM4 motherboards and DDR4 RAM are abundant and cheap
  5. Dual channel DDR4-3200 — enough bandwidth for RandomX without expensive DDR5

If you're building a dedicated mining rig today, AM4 + Zen 3 is the answer. The only question is which CPU fits your budget.

When does mining make sense?

The uncomfortable truth: at average electricity rates ($0.07–0.10/kWh), most CPUs are barely profitable or slightly unprofitable for Monero mining in 2026.

Mining makes economic sense when:

  • Electricity is free or very cheap (< $0.05/kWh) — solar, hydro, included in rent
  • You already own the hardware — no system cost to recoup, so any positive net income is profit
  • You're heating a room anyway — a mining PC produces constant heat. In winter, it replaces an electric heater with essentially the same electricity consumption but also earns crypto

Mining does NOT make sense when:

  • You're buying hardware specifically to mine and expecting quick ROI
  • Your electricity rate is above $0.10/kWh
  • You're comparing it to simply buying XMR on an exchange

Our recommendation

  1. Check your electricity rate — use our profitability table and enter your actual rate
  2. Look at net profit, not gross income — electricity is the biggest expense
  3. Consider used AM4 hardware — Ryzen 5 5600X is the best starting point
  4. Don't invest money you can't afford to lose — crypto mining income fluctuates with price and difficulty
  5. Read the methodology — understand exactly how we calculate these numbers
← Back to blog