If your using low graphics settings then the card will only boost to what it needs.
And the 2400/2500 is not 'promised', it is 'up to' (and game/settings dependent).
Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T..