| IBM ThinkPad 755CS | |
Some stats about the machine, as it was when I got it:
Running PC Dos 6.3, the machine had 611k of free space in lower memory. This was with EMM386, HIMEM, some IBM utils relating to the power management and PCMCIA slots, Smartdrive, mouse, and doskey installed. No drive compression though.
Time to boot to DOS: 32 seconds. Time to boot to Windows 3.1 after that: 20 seconds.
PC Dos 6.2 uses SuperStor/DS for disk compression; it was not enabled; but I wanted to see what it would do so I tried it out. Running SS/DS dropped the free conventional memory by 41k, to 570k. I tried running RAMsetup, PCDOS's version of memmaker, and it only improved things by 4K, for a total of 574k free conventional RAM. Then I used SS/DS to compress the drive; however it complained that the machine's 800 MB drive was too big to compress. Instead I made a 300MB drive out of the disk's remaining free space and copied over the files to find out what the true compression ratio was. After copying over a random selection of the hard disk it achieved a miserable 1.3 to 1 ratio. Concluding that a lot of .wav and .avi files had been copied, I tried again, just copying MSOffice 4.2 and Windows. This produced a ratio of 1.6 to 1, only slightly better than the 1.5 ratio I usually get when I use MS drvspace. Considering I didn't do a direct comparison on the same files, this difference may not actually be significant.
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