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DDR4 has been the standard for desktop computers since its introduction in 2014, with DDR5 taking over only in the recent few processor generations. DDR5 brings with it higher capacity, greater speed, new functionality for overclockers, and reduced power usage. One key difference consumers will notice is that most DDR5 kits start at 32 GB, typically in a 2 x 16 GB setup, which is a welcome change from the 16 GB DDR4 kits.
Despite their visual similarities, DDR4 and DDR5 are not compatible. Although memory manufacturers will continue to stock both varieties, it is essential to choose the right type for your motherboard. A visual indicator to differentiate between the two is the notch in the pins at the bottom - it's directly in the center for DDR5, while it's slightly offset for DDR4.
DDR5 outperforms DDR4 in terms of speed and performance. While DDR4 chips technically max out at 3,200 MHz, DDR5 starts at this speed and supports speeds up to 8,000 MHz. Overclocking has also improved with Intel's updated XMP (eXtreme Memory Profile) to 3.0 for DDR5, boasting five profiles compared to XMP 2.0's two.
Despite having a higher latency than DDR4, DDR5 offers better performance overall due to its faster clock speeds. As memory manufacturer Corsair explains, DDR4 usually has a CAS latency of 16, while DDR5 will have a CAS latency of at least 32. However, due to its faster clock speeds, the newer standard performs tasks more efficiently.
DDR5 brings with it higher capacity, greater speed, new functionality for overclockers, and reduced power usage. Despite having a higher latency than DDR4, DDR5 offers better performance overall due to its faster clock speeds.
