AMD may not have CPUs quite as powerful as Intel's best, but that doesn't mean it lacks any and all high-end chips. In fact, it has some pretty good AMD3+ CPUs, for FX chips, and it is that socket that ASRock's newest top-end mainboard supports.
Said motherboard is called Fatal1ty 990FX Killer, from the Killer E2200 network controller that maximizes game performance.
A full-size ATX motherboard, it has four DDR3-2400 memory slots (64 GB top dual-channel capacity), two PCI-Express 2.0 x16 slots, a third PCI Express 2.0 slot (x4) and five internal SATA 6 Gb/s ports, plus one eSATA.
7.1 channel audio is another asset, as is the EMI shield for the CODEC and high SNR CODEC, plus PCB ground-layer isolation and full support for Windows 8 Secure Boot.
The ASRock Fatal1ty 990FX Killer product page has all the rest of the info, except a price and availability date.