Is a desktop or a laptop more energy efficient for mining Malairte?

Per watt, modern laptops are usually more efficient than desktops because their mobile CPUs and integrated GPUs are tuned for battery life. A laptop pulling 65W can mine respectably while costing only $5-8/month in electricity at typical home rates. A desktop pulling 350W earns more MLRT but costs five to seven times more to run. If your goal is to mine "for free" alongside normal computer use, a laptop is hard to beat. If you want to maximise hashrate per dollar of hardware, a desktop with a dedicated GPU wins. Laptops also have weaker cooling, so prolonged 24/7 mining can stress the keyboard and battery - many laptop miners run only 8-12 hours per day.