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Is there software available that I can run on my system to detect possible hardware bottlenecks (CPU, RAM, Graphics, …)?

p/s : I'm running Windows 7

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If you are running Windows those tools are called the Performance Monitor and Resource Monitor. For Linux, top/htop can give you a lot of good info. However, these tools will not draw conclusions for you. You need to look at several things
- CPU use and processor queue length - Hard Page faults (page faults that need to be read from swapfile/disk - disk queue length

Queue lengths should not be sustained above 2 for nay resource (Multiply that by #cores for CPU)

Small numbers of page faults are OK.

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In top of those two there are the SysInternals tools, specifically in this case: Diskmon, ProcessExplorer, ProcessMonitor and VMMap. – Shadok Mar 1 '12 at 15:56
    
+1 for the SysInternals tools – uSlackr Mar 1 '12 at 16:20

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