Anyone tried one of these: Quad V7 TAI Logic Module

[gateway]

The Quad V7 TAI Logic Module can hold designs up to 80M ASIC gates with four Xilinx Vitex-7 2000T FPGA devices and has two on-board DDR3 SO-DIMM sockets and two on-board DDR2 SO-DIMM sockets to meet a variety of high-speed memory applications. The Quad V7 TAI Logic Module supports 48 channels of high speed Gigabit transceivers capable of running up to 10Gbps for a variety of high-speed interfaces such as PCIe, SATA and XAUI. In addition to our existing USB2.0 port for our popular runtime software features such as FPGA download, programmable clock generation and self-test, the new Quad V7 TAI Logic Module now supports these runtime features through Ethernet cable so you can control your FPGA hardware remotely. S2C has also added a number of new runtime features such as I/O voltage setting and clock frequency read back through software control.

http://www.s2cinc.com/product/HardWare/V7TAILogicModule.htm

http://www.s2cinc.com/product/HardWare/images/quad_fontcheck.gif

Of course I couldnt find any prices on them but would guess a few thousand or even more, the unique thing is that they can easly be stacked.

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[Lethos]

I have a feeling it be a lot more expensive than that.
One Virtex 7 chip alone would be classified as a few thousand at a min. $20-40k Maybe.

Sure it be pretty powerful, but expensive in the face of ASIC now a days for say Bitcoin, but useful none the less in the unlikely scenario Bitcoin protocols changed.
For Litecoin, while I'm not overly familiar with the demands of it, I do know it's memory hungry, I would worry it's not got enough and/or fast enough to not be a bottleneck.