ASRock has put together a collection of desktop boards based on Intel's Bay Trail-D SoC. As far as I can tell, there are only two actual board designs: a Mini-ITX version and a larger, microATX variant. Each one is available with a dual-core Celeron J1800 processor or a quad-core J1900 chip. The duallie has a 2.4GHz base clock with a 2.6GHz Turbo peak, while the J1900 is clocked at a slightly slower 2.0/2.4GHz. Both chips have relatively low 10W TDPs, which has allowed ASRock to get away with passive cooling.
The Q1900B-ITX and D1800B-ITX fill out the mini side of the spectrum. Both feature dual SO-DIMM slots for memory and one PCIe x1 slot for expansion cards. They also have two 3Gbps SATA ports (Bay Trail doesn't supports the 6Gbps version of the spec), one HDMI output, one USB 3.0 port, and three USB 2.0 ports. Legacy connectors abound, too.
A Realtek-based Gigabit Ethernet controller provides wired networking connectivity right out of the box. However, there's no onboard Wi-Fi support—and no Mini PCIe slot for notebook-style wireless cards. Folks who want to add wireless functionality will have to resort to a USB dongle or a PCIe x1 expansion card.
The Q1900M and D1800M are the microATX models. These boards offer more PCIe expansion options than their Mini-ITX counterparts: they each sport two x1 slots in addition to a physical x16 slot with one lane's worth of connectivity. The microATX boards also swap the SO-DIMM slots for full-sized desktop memory, and they add a DVI video out to the rear cluster.
I don't see the ASRock boards selling stateside, but I'd expect them to be available soon. Newegg already carries a handful of Bay Trail-D boards from Asus, Gigabyte, and Biostar. The J1800-based models are priced from $70-80, while the lone J1900 option is selling for $92.
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