In comparison to DDR5 or if you are comparing DDR3 vs DDR4? My little cousins laptop was running slow a few weeks ago, and since I had some old DDR3s scattered around from old laptops I used many years ago, I gave him some more firepower. Well, I wanted to, but none of the ones I had were compatible. I had to take the laptop to my local IT guy who needed a particular type of L version of the DDR3 to get it up and running. Freaking DDR3s. Anyways, turns out that despite all that trouble and compatibility issues, DDR3 is more expensive then the better DDR4. It's still in demand but the supplies are running low which keeps the prices up.