Depending on the CPU, RAM speed can be a big one. Laptop vs desktop still carries a performance cost due to the power requirements. NVMe SSDs are to regular SSD

Depending on the CPU, RAM speed can be a big one. Laptop vs desktop still carries a performance cost due to the power requirements. NVMe SSDs are to regular SSDs what they were to hard drives, but there are limits, especially gigabit internet and slower CPUs. Honestly though, the biggest gains are generally in making software more efficient — like choosing Safari instead of Chrome, or removing unnecessary drivers and bloat from your system. Run a startup log or check your system’s logs for errors that might slow down your computer. Oh, and install browser-native adblockers on every device. :)