The 44p Model 170 is a 1-CPU (POWER3-II) machine. You cann have 334MHz and 400MHz processors. The size of RAM is 256MB-2GB over a 128bit bus.
There is a "RS/6000 7044 Model 170 Technical Overview and Introduction" handbook, for instance
here.
The machine is quite good as long as you do not need to install anything beyond AIX 5.1 (and maybe 5.2, i'm not sure about this), although it is a 64-bit-machine.
A (modern) alternative would be the Intellistations series, which are also low-priced deskside workstations designed for single-user purposes.
Hope this helps.
bakunin