Small screen and around 8x slower than the PineTab-V, between 1.0 GHz vs 1.5, single-issue vs dual-issue (good for ~1.5x), and one core vs four cores. Plus 1 GB

Small screen and around 8x slower than the PineTab-V, between 1.0 GHz vs 1.5, single-issue vs dual-issue (good for ~1.5x), and one core vs four cores. Plus 1 GB RAM vs 4 or 8 GB. The PineTab-V is at least around the same speed as the Arm-based PineTab2, with the SiFive U74 being very comparable to (even a bit better than) the Arm A55 at the same MHz. In these devices the Arm is at 1.8 GHz vs the RISC-V at 1.5 but that's pretty minor. Also the Arm has NEON SIMD while that generation of RISC-V doesn't have SIMD or Vector -- the D1 and TH1520 do have 128 bit vectors, though standard software doesn't support that, so it's only whatever you write yourself.