Is 16GB still the right size?
For many people it is, and it is also the cheapest way into DDR5. Newegg's 2026 guide lists 16GB for browsing, office work, school work and most 1080p gaming. The Steam Hardware Survey for September 2026 shows 32GB as the most common amount among Steam users, at 42.22%, so 16GB is now the budget size for gamers rather than the default.
The practical test: open the Task Manager while you do your normal work and check the memory graph. If it sits near the top most of the time, move to 32GB. If it stays well below, a faster SSD or processor will help more than extra RAM. Our 32GB prices show what the step up costs this week.
Which 16GB kit should you buy?
Check your motherboard first. DDR5 and DDR4 modules do not fit each other's slots, and the board decides which one you need. For a new AMD AM5 or Intel Core Ultra build it is DDR5, and a kit of two 8GB sticks is the normal 16GB layout. At this size the price gap between DDR5 and DDR4 shows in the numbers: the median 16GB DDR5 kit costs $291.49 and the median DDR4 kit $129.99.
Do not pay extra for speed at 16GB. A fast kit with tight timings costs more and changes little in daily use. Pick a rated speed that your board and processor support, and switch on the XMP or EXPO profile in the BIOS, otherwise the kit runs at a slower default speed.
If you already have 16GB and want 32GB, buy one new matching 32GB kit rather than a second 16GB kit. Kits bought separately are not tested as a pair.