List of Processors to help you understand what my be low/mid/high end
I have kept it simple so this my not be 100% accurate.
---------High End---------
Dual core 3.50 Ghz
Quad core 3.20 Ghz
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---------medium End---------
Dual core 3.0 Ghz
Quad core 2.50 Ghz
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---------LOW End---------
Dual core 2.50 Ghz
Quad core 1.25 Ghz
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This is just small a list to help you understand where you may be.
If you are close to one of the listed, use it. If you are above what is
listed then you are more than safe when it comes to the settings. If you don't
know you can use high if that is the case
other wise use someting close to what is listed.