Pctv HD Stick USB Hd Atsc Ntsc Clearqam Tuner System Requirements - Windows XP with SP2 or Windows Vista (32-bit), Intel Pentium 4 2.4 GHz, Pentium M 1.3 GHz or AMD Athlon 64 processor (for HDTV reception, a Pentium 4 2.8GHz or Pentium M 1.7 GHz or equivalent AMD Athlon 64 processor is recommended), minimum 256MB RAM, Free USB 2.0 port, Sound and graphics controller with support for DirectX 9, 1GB free space, and CD or DVD drive