Hum,
Hardware doesn't really have much affect on the download speed (if you know what i mean)...
The main restriction is the type of internet connection, the quality of that connection and your ibrowse settings (eg like MTU etc)
A 56k modem may expect 6k/sec...
(though i must admit , when i carried out a test with the same hardware on a PC, and same settings, i only got 4.5k/sec???)