This looks like one bad-ass card!
From observations at the bot, I'd say the GTX580 Lightning has the most potential for setting good results as the memory is overclocking quite a lot better than the other custom design cards. Sadly enough, the GPU overclocking results aren't as consistent as the DCU-2 is putting out. The SuperOverclock card from GIGABYTE then again has the record clock for GTX 580 at this moment (1550 MHz through 3DMark11), but a lack of consistency and the disappointing memory clock makes me doubt.
Maybe the Matrix brings the best of both worlds? Consistent highly overclocking GPUs and Lightning-esque memory clocks.
Here are the first pictures of ASUS' Republic of Gamers (ROG) MATRIX GTX 580 graphics card, this triple-slot single-GPU monstrosity is designed to humble every other air-cooled GTX 580 graphics card in the market. The card packs a NVIDIA GF110 graphics processor with high out of the box clock speeds. It is ready for overclocking and easy voltage modifications. The card features redundant BIOS ROM chips to provide a fallback if flashing the BIOS fails. Apart from one-touch BIOS selection, there are buttons on the card itself that gives you on-the-fly fan control.
The ROG MATRIX GTX 580 comes with out of the box clock speeds of 816/1632/4008 MHz (core/CUDA cores/memory effective), and packs 1536 MB of GDDR5 memory over a 384-bit wide memory interface. The card features a number of ROG-exclusive features such as iROG and fancy illuminated MATRIX logo. The card is powered by a large 19-phase VRM that draws power from two 8-pin PCI-Express power connectors. The beast is cooled by a large triple-slot fan-heatsink that uses two large fans to ventilate a complex heatpipe-fed heatsink. Display connectivity includes two DVI, HDMI and DisplayPort. There's no word on the availability.