Profitability and Costs (ROI)

Profitability and Costs (ROI)Used ElectronicsWindows 11 laptop showing Task Manager CPU and memory performance graphs beside a small desktop fan, with a power strip under the desk — Windows 11 laptop slow? 15 fixes, by Sell Your PC South Africa.
February 28, 2026

Windows 11 Laptop Slow? 15 Fixes

Speed up a slow Windows 11 laptop with 15 practical fixes, from updates and startup apps to storage cleanup and safe repairs, plus when to upgrade or sell.

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Crypto MiningProfitability and Costs (ROI)South African outbuilding mining setup with four ASIC miners on a shelf, large silver ducting exhausting hot air outside and an immersion-cooling tank — mining hardware trends 2026: noise and cooling, by Sell Your PC South Africa.
February 21, 2026

Mining Hardware Trends 2026

South African mining hardware trends for 2026, focused on J/TH efficiency, air vs hydro vs immersion cooling, and practical noise control for homes and farms.

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Crypto MiningProfitability and Costs (ROI)Older single-fan ASIC miner on a steel shelf beside a wall electrical panel, large round duct fan and a stack of battery cabinets — new vs used ASIC miners: what makes sense, by Sell Your PC South Africa.
February 20, 2026

New vs Used ASIC Miners: What Makes Sense

Decide whether to buy new or used ASIC miners in 2026. Learn SA import VAT basics, load shedding risk planning, and a used-miner inspection checklist.

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Crypto MiningProfitability and Costs (ROI)Small home ASIC miner with a power meter reading 850 W beside a Wi-Fi router and a South African calendar — mine Bitcoin or sell hashrate, by Sell Your PC South Africa.
February 18, 2026

Mine Bitcoin or Sell Hashrate?

Compare mining BTC to a pool vs selling SHA-256 hashrate on NiceHash. Learn how difficulty, payout methods, fees, and SA power costs change outcomes.

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Crypto MiningProfitability and Costs (ROI)South African outbuilding showing an Eskom prepaid meter, a mining rig on a cart, an outdoor diesel generator and rooftop solar panels — Eskom vs solar vs generator: cost per kWh for mining, by Sell Your PC South Africa.
February 9, 2026

Eskom vs Solar vs Generator: Cost per kWh

Learn how to calculate true all-in R/kWh for crypto mining in South Africa across Eskom, solar PV, and diesel generators, including fixed charges and losses.

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