Second, NFS Planet got the system requirements for NFSU:
And last, a few days ago new NFSU movies were released. See them on IGN, Fileplanet and on Gamershell.Pentium 3 800 Mhz
128 MB Ram
GeForce2 equivalent (or newer) with 32MB VRAM
Windows 98 or newer
1 GB free space
12x CD-Rom