Minimum hardware requirements

From the help handbook FAQ: What kind of hardware do I need to run TDE? To run TDE it is recommended that you have at least a pentium II processor, 64MB of memory and 500MB of free disk space for a basic installation. While TDE may run on slower configurations than this, performance can be severely impaired. Generally, if your computer runs an X-Server already with other desktop environments or window managers it's probably fast enough to run TDE. I have tested Trinity on a PII with 448 MB of RAM. Barely usable and requires patience. What are _realistic_ minimum hardware requirements? I'm guessing Pentium III and 512 MB of RAM. Thoughts? Experiences? Darrell