Why? This board is 100% incompatible to every other SBC also called 'Banana Pi'. The most similar would be the old BPi M2 with its A31s SoC (that would also be twice as fast since it features a 544MP2 GPU and not an ultra slow 544MP1 as with Banana Pi M3)
Be careful. Mali400 as used on BPi M1/M1+ (both great devices) and M2+ is only capable of GLES2 (so you might benefit from some GPU work doing color space conversion and stuff like that). But full OpenCL compliance requires bigger Malis (600, 700 or above).
PowerVR is something different. And what's written in specs and what can be used in reality... I don't know any other SBC currently where reality and specs differ more than BPi M3.