Here are some snapshots of gtop to give you a feel for how much memory Window Maker can take up. The machine in question is an Amd k6-3 400mhz system with 162mb of ram. The video card is a Nvidia Riva TNT2 card with 32mb sram. The workstation is running RedHat 6.2 with kernel 2.4. XFree version is 4.0.1 with the official Nvidia Drivers.