The eC4159 is a tiny PC that measures only 6 inches x 6 inches x 2.5 inches and weighs in at only 3 lbs. Although its 1.47 GHz CPU speed might seem paltry in comparison to the 3.2 GHz standard you see now, this PC is powerful egnough to watch movies, browse the internet, check email and do word processing, in other words, unless you use your PC for gaming or coding, it might be perfect for everything you need.
Specs
CPU: Intel Celeron M410 1.47 GHz - L2 Cache
Memory: 512 MB 667 MHz DDR2 pc 5300
Ports: 2 USB 2.0, 1 Firewire, DVI external connector (with DVI/VGA splitter), S-Video out, Line Out, Microphone in, and Optical Out
The eC4159 competes with the entry level 1.66 GHz Mac Mini but is $100 cheaper. However, the Mac Mini is significantly more powerful making use of an Intel Core Duo processor instead of a Celeron, and also is noticeably thinner (2" vs. 2.5").
A unique feature of its small form factor is the ability to mount the enano on your LCD monitor with an available bracket accessory.