A great piece of RPS-approved kit at a discount.
(We sawsimilar results for Switch too, over at Digital Foundry.)
What more could you want?
The best value Steam Deck memory card is down to £37 for 512GB
SanDisk's capacious 512GB Ultra drive is down to £36.99 at their UK web store, offering nearly a 50% savings off its RRP - ideal for Steam Deck owners.
