My iPhone XS is faster?? best: 2684.35 gflops [numthreads(16, 16, 1)] compute void main(constant float4[] A : register(u0), constant float4[]

My iPhone XS is faster?? best: 2684.35 gflops [numthreads(16, 16, 1)] compute void main(constant float4[] A : register(u0), constant float4[] B : register(u1), device float4[] C : register(u2), float3 threadID : SV_DispatchThreadID) { uint m = uint(threadID.x); uint n = uint(threadID.y);