Dolphin 360 Emulator -

Dolphin on PC relies on Dynamic Recompilation (Dynarec) — translating PowerPC blocks into x86 on the fly. The Xbox 360’s Xenon CPU is also PowerPC, but a different kind (SMT vs. simple in-order). You can't run GameCube PowerPC code natively on Xenon PowerPC because the memory model and instruction sets are incompatible. You still need a dynarec, but writing a dynarec for a console with 512MB of shared RAM is a nightmare.

Xenia is the leading Xbox 360 emulator for Windows. It is an experimental, open-source project that has made incredible strides in the last few years. dolphin 360 emulator

Official Dolphin gives you: Steam Input support, gyro mapping, HD texture packs, netplay, and constant updates. Dolphin on PC relies on Dynamic Recompilation (Dynarec)