Hardware Unboxed on X: Just to clarify DDR5 is not backwards

At 1080p, DDR5 was 11% faster on average, but the 35% margin in 1% low performance is more pronounced The margins at 1440p are also significant

EEB CEB SBC Memory Type DDR5 · DDR4 Memory Slots 8 · 6 · 4 · 2 Graphics Interface PCIe · PCIe · PCIe PCIe x 16 Slots 7 · 6 · 5 · 4 · 3

ddr5 slot DDR5 feeds the need for speed, delivering an immediate 50% increase in bandwidth over DDR4 DIMMs with a data rate of Gbs Per the JEDEC

ddr5 in ddr4 slot DDR4 sticks won't fit in DDR5 slots either So, if you're planning to keep your current motherboard, sticking with DDR4 is the way to go 5