For your 128GF I take it you are assuming 1:4 with FP32. That would be unexpected. E.g. in contrast to AMD parts, the recent NV parts based on Maxwell2 (such as

For your 128GF I take it you are assuming 1:4 with FP32. That would be unexpected. E.g. in contrast to AMD parts, the recent NV parts based on Maxwell2 (such as GM204 in the gtx980) are 1:32 for FP64:FP32. I would expect that ratio to hold in this part, and the SMs are likely highly similar, giving the ~16GF number I used. I haven't seen the automotive workloads, but they strike me as repetitive and regular enough that a Denver style part would do ok. That said, I'm not shocked by the use of A57+A53. (Disclaimer: I worked on an early version of Denver on the code morphing software, and at an ARM server vendor on A57 based SOC).