I guess most of the cab files accompanying setup files are encoded so that they can only be opened by installshield. U can identify such files by checking the same directory for a correspondingly named .hdr file. Most other cab files can be opened using winrar, etc.
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Winchester 3200+ @2,500MHz
LeadTek 7900GT VOLT MODDED @ 680 core, 1800 mem
2x1GB Transcend DDR400 @ DDR454 2.5,3,3,5,1T
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