There were 4 SKU models of that card, 2 are listed as 1340/1750.
Check which SKU model you have on SapphireTech site.
Fairly sure only the 8GB cards were 2000MHz (the odd exception).
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..