My 4 year old netbook's Intel Atom N270 (1.6 GHz, 1 GB RAM, Graphics (integrated)Intel (GMA)GPU model 950) only went up to 58% CPU usage during the tearing.

    Running userland applications:
    FreeBSD 9.x
    Chromium
    2 terminals (urxvtc)
    top
    tshark
    DWM + dmenu

Seems like it was worth the $99.