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In laptops, the performance of the CPU in sustained use is heavily tied to the cooling solution. Almost all laptops will hit a performance ceiling due to therma
by andrepew 6y ago
In laptops, the performance of the CPU in sustained use is heavily tied to the cooling solution. Almost all laptops will hit a performance ceiling due to thermal throttling. A desktop is at a massive advantage here.
There are also potentially OS differences or other config differences. You'd need to normalize everything to get an accurate picture when comparing the two CPUs.
- dragontamer 6y agoBut desktop cores use vanishingly small amounts of power for single-threaded tasks. The only time you really run into thermal-limits on desktops (or laptops) is when you're hitting SIMD across many cores: 16-thread or 32-thread tasks with AVX and the like.
- andrepew 6y agoThey're talking about a difference in real world dev use. My Macbook Pro thermal throttles just running Chrome sometimes (which is always running while I develop). If I started a single threaded compile alongside that, it most definitely would run slower.
- astrange 6y agoMulti-threaded tasks rarely exist in the wild. Compiling a project runs multiple processes at once, which is strictly better because it doesn’t need synchronization.