Windows 7 went through several development milestones before reaching its final stable release. Identifying your version is simple:
Older machines often run more smoothly on Build 7600 without the additional overhead of later updates. windows 7 sp0 x64 build 617600 full version link
Provided a significant boost for gaming and high-performance graphics applications. Windows 7 went through several development milestones before
The "Superbar" introduced pinning applications and Jump Lists for quick access to frequent files. windows 7 sp0 x64 build 617600 full version link