The group "CODEX" typically releases cracked versions of modern PC games (DRM-free executables). Tekken 6 was never released natively for PC. Therefore, a "CODEX" release for Tekken 6 does not exist in the traditional sense.
RPCS3 or newer.
Since you are emulating a Cell processor (PS3) or Xenon (360), CPU power is more important than your GPU. tekken 6 emulated for pc codex top
: The best option for lower-end hardware. It is highly optimized and even includes a mouse and keyboard support configuration through third-party sites like Nexus-Games System 357 Arcade Fork The group "CODEX" typically releases cracked versions of