As a fellow AMD user, take with a grain of salt when people try to sell you into buying Intel and tell you AMD is bad no matter what.
Metroid Prime is a complicated game, and as such no matter what CPU you have, you need the right configuration/build in order for it to run properly (though your CPU is a bit outdated, I played MP fine back when I had a phenom).
I would suggest you try using dolphin r7719, and right click your metroid prime game and check "enable accurate vbeam emulation". Because it's an older build you might run through some glitches that are not present on recent builds, there should be no issues with sounds besides music occasionally stopping or desyncing (very are, entering into an area with different music solves it), there is no sound stutter and FPS are solid mostly (intro sequence runs at full 60 fps).
Try that and see how it goes.
Metroid Prime is a complicated game, and as such no matter what CPU you have, you need the right configuration/build in order for it to run properly (though your CPU is a bit outdated, I played MP fine back when I had a phenom).
I would suggest you try using dolphin r7719, and right click your metroid prime game and check "enable accurate vbeam emulation". Because it's an older build you might run through some glitches that are not present on recent builds, there should be no issues with sounds besides music occasionally stopping or desyncing (very are, entering into an area with different music solves it), there is no sound stutter and FPS are solid mostly (intro sequence runs at full 60 fps).
Try that and see how it goes.