# ISA Comparison Table
-| Name | Num <br />opcodes | Class | Predicate <br /> Masks | Twin <br /> Predication | Explicit <br /> Vector regs | 128-bit | Bigint <br /> capability | LDST <br /> Fault-First | Data-dependent <br /> Fail-first | Predicate-<br /> Result |
-|--------------|-------------------|-----------------|------------------------|-------------------------|------------------------------|---------|--------------------------|-------------------------|----------------------------------|-------------------------|
-| SVP64 | 5 {1} | Scalable {2} | yes | yes {3} | no {4} | n/a {5} | yes {6} | yes {7} | yes {8} | yes {9} |
-| VSX | 700+ | PackedSIMD | no | no | yes {10} | yes | no | no | no | no |
-| NEON | ~250 {11} | PredicatedSIMD | yes | no | yes | yes | no | no | no | no |
-| SVE2 | ~1000 {12} | HWSCalable {13} | yes | no | yes | yes | no | yes {7} | no | no |
-| AVX-512 {14} | ~1000s {15} | PredicatedSIMD | yes | no | yes | yes | no | no | no | no |
-| RVV {16} | ~190 | Scalable {17} | yes | no | yes | yes {18}| no | yes | no | no |
+| Name | Num <br>opcodes | Taxonomy / <br> Class | Predicate <br> Masks | Twin <br> Predication | Explicit <br> Vector regs | 128-bit | Bigint <br> capability | LDST <br> Fault-First | Data-dependent <br> Fail-first | Predicate-<br> Result |
+|--------------|-------------------|-----------------------|------------------------|-------------------------|------------------------------|---------|--------------------------|-------------------------|----------------------------------|-------------------------|
+| SVP64 | 5 {1} | Scalable {2} | yes | yes {3} | no {4} | n/a {5} | yes {6} | yes {7} | yes {8} | yes {9} |
+| VSX | 700+ | PackedSIMD | no | no | yes {10} | yes | no | no | no | no |
+| NEON | ~250 {11} | Predicated SIMD | yes | no | yes | yes | no | no | no | no |
+| SVE2 | ~1000 {12} | HW Scalable {13} | yes | no | yes | yes | no | yes {7} | no | no |
+| AVX-512 {14} | ~1000s {15} | Predicated SIMD | yes | no | yes | yes | no | no | no | no |
+| RVV {16} | ~190 | Scalable {17} | yes | no | yes | yes {18}| no | yes | no | no |
* {1}: plus EXT001 24-bit prefixing. See [[sv/svp64]]
* {2}: A 2-Dimensional Scalable Vector ISA with both Horizontal-First and Vertical-First Modes. See [[sv/vector_isa_comparison]]