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In Arm tradition, X925 has a number of configuration options. However, X925 omits the shoestring budget options present for A725. X925’s caches are all either parity or ECC protected, dropping A725’s option to do without error detection or correction. L1 caches on X925 are fixed at 64 KB, removing the 32 KB options on A725. X925’s most significant configuration options happen at L2, where implementers can pick between 2 MB or 3 MB of capacity. They can also choose either a 128-bit or 256-bit ECC granule to make area and reliability tradeoffs.