Who needs 64GB?
Fewer people than you might think. Newegg's 2026 guide puts 64GB at serious video editing, 3D rendering, large datasets and local AI models. For gaming, browsing and office work, 16GB or 32GB does the job. The jump in price is steep: the cheapest 32GB DDR5 desktop kit is £394.97, while the cheapest 64GB kit is £713.99. Check our 32GB prices first.
You need it if the memory graph in Task Manager stays near full while you work, if projects slow down once you open a second large application, or if virtual machines compete with the host for memory.
How to buy 64GB
As a matched kit of two 32GB modules. Mainstream desktop platforms are dual channel, so two modules give full bandwidth, and filling four slots makes it harder to hold high speeds. AMD's specification for the Ryzen 7 9800X3D lists DDR5 5600 with two modules and DDR5 3600 with four. A 4x16GB layout can run, but expect a lower speed or manual tuning.
On an older DDR4 board, look up the maximum module size in the manual. Some boards do not accept 32GB sticks, and then 64GB is simply not possible.
Price check
The table lists each 64GB kit with its price per GB, so you can see whether a pricier kit buys real speed or only a heatsink. Change of the median DDR5 price per GB over the last 4 weeks: not measured yet. All prices include VAT, and delivery is extra.
Memory speed on a 64GB kit depends on your processor and board. Check your CPU's official memory support before paying for a kit rated far above it.