Does a computer become fast when higher HDD are installed?

The differences between 5400 RPM, 7200 RPM, 15000 RPM are 'substantial' in comparison to a mechanical drive, but 'minimal' in comparison to most SSD.

The 'gain' is the lowering of the lag-times in map, etc loading. If your game requires the use of the CD/DVD then create an image of it to your HDD wherever possible; drive emulators.
 

mercuryman24

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Feb 17, 2011
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any recommendations for hard disk to my PC?
core i3 540
hd 5770
2x2gb ddr3
currently 160gb hdd