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Here is whats bothering me. For example, I play two games, Assassins Creed and MW3. When my friends call me to play MW3 I minimise Assassins Creed to go and play MW3. But Assassins Creed still consumes valuable processors time (over 50%, memory is not the problem). I understand that process must be in the memory but can I pause it somehow to not consume processor?

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Can be easily done for other applications through a more advanced task manager like Process Explorer. However, games uses graphics acceleration interfaces, so I am not sure what the effects will be. The sources may not be released and the game can crash when you un-pause, but you can easily try and see what happens. –  billc.cn Oct 27 '12 at 10:26
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2 Answers

up vote 7 down vote accepted

Use the Resource Monitor provided with Windows.

  1. Open Task Manager
  2. Go to Performance Tab.
  3. Open the Resource Monitor in the left bottom .
  4. Find out your process in the list.
  5. Right click, there is option to "Suspend Process".
  6. You can "Resume Process" afterwards.

No need to download any software, explore the Windows Operating System.

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Nice! I didn't even think to check Resource Monitor. –  Indrek Oct 27 '12 at 11:33
    
Just what I was looking for, and no new software required! The best kind of answer. –  aardvarkk Sep 30 '13 at 14:01
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This can be done with Process Explorer, as noted in a comment above. Download and run it, find your game in the list of processes, right-click on it and select Suspend.

To resume the process, right-click on it again and select Resume.

I gave it a quick test, and it seems to work. Started the Torchlight II demo, loaded a game, then suspended the process. Went to play some DiRT Showdown, then came back, resumed the Torchlight II process and could continue playing the game with no problems. Also, while suspended, Torchlight II consumed no CPU or GPU time (according to Task Manager and GPU-Z).

So it's definitely possible with at least some games, though I can't say about Assassin's Creed. Only way to find out for sure is to try it.

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