The GPU should be VLIW4 instead of VLIW5 that is in Llano. VLIW4 approx. has ~1.1-1.15x better performance than VLIW5 at similar stream proc. count and clock . So 384SP in Trinity should be equivalent to ~422-440SP in Llano(at same clock). Since top Llano's GPU runs at 600Mhz and Trinity's at 800MHz,it's obvious how much faster will Trinity based APU be in GPU tasks: 422/400x800/600=~1.40x or 40% faster.