Another important 'hardware' that doesn't get enough attention is the chair & desk. I believe that having an ergonomically designed and adjustable chair and desk is as important as the PC specs to programmer productivity. In my current job I have a bad chair/table and it is breaking my back. Probably this issue also gets worse with age. Investing in good furniture might also save the company on health care costs. From personal experience I have spent quite a bit on fixing my back.