Both systems feature a 320GB hard drive (with room for a secondary 2.5" unit), 2GB of DDR3 RAM, and include the same connectivity options -- six USB 2.0 ports, 802.11n Wi-Fi, HDMI and VGA display outputs, S/PDIF and a combo eSATA/USB port. Amazon lists the ION 330-HT and 330HT-BD as barebones, priced at $459 and $589 respectively, although there's not much left for to the user to install besides an operating system.
A Wi-Fi-less 330Pro model is also available priced at $423. ASRock quotes sub-26dB noise levels, and says the systems measure only 12 x 9 x 4.5 inches, which makes them great candidates for a home-theater setup. We've been playing around with the ION 330HT-BD for a few days now and are really happy with its compact design, snappy Windows 7 performance, and smooth 1080p video playback -- expect a full review soon.