Minimum System Requirements for TiVo Desktop Plus:
Windows XP, Vista, 7, or 8
1 GHz P2 or equivalent processor
512 MB RAM
5 GB free disk space, plus an additional 1 to 3 GB for each hour of Standard Definition (SD) programming you transfer, depending on the quality of the recording.
Certain features of TiVo Desktop Plus may require more computing resources than the basic features. These include
Storage and playback of High Definition (HD) content
Converting TiVo recordings to a portable format
Viewing web content on your TiVo box
If you plan to use these features, we highly recommend the following:
2.2 GHz P4 or equivalent processor
1 GB RAM
5 GB free disk space, plus an additional 5GB for each hour of HD programming you transfer.
TiVo Desktop Plus requires Windows XP with Service Pack 2 or later, Windows Vista, or Windows 7.