Recent advancements in computer hardware over the past four years include significant developments in CPUs, GPUs, and display technologies. Notable releases in processors, such as Intel's Core i series and AMD's Ryzen line, have improved performance and efficiency. Graphics cards have also seen enhancements, with new architectures providing better rendering capabilities and support for advanced gaming features like ray tracing. Display technology has evolved with the introduction of 3D monitors and higher refresh rates, enhancing visual experiences. Additionally, there have been improvements in motherboard designs, including better power delivery systems and support for faster memory. Resources like AnandTech and Tom's Hardware are recommended for comprehensive information on these advancements.