Asrock x58 deluxe vs Asrock X58 extreme

I am going two buy a new motherboard and i need advice n this two 1] ASRock X58 Extreme and ASRock X58 deluxe. Does any one know which one best. What are the advantages of ASRock X58 Extreme over ASRock X58 deluxe?

ASRock X58 SuperComputer motherboard comes in a vertical box of relatively small size for a flagship product. It features a convenient carry handle. ASRock includes the standard array of components like the Realtek ALC890 HD audio codec, Realtek RTL8111D, VIA VT6330 IEEE 1394a/IDE combo chipset, Intel ICH10R for SATA and RAID support on six ports, along with full support for the Core i7 processor series.

Asrock x58 extreme board has the X58 chip on it. This new motherboard includes several remote special features, and it supports contemporary multi-GPU standards with the maximum possible configurations: ATI crossFireX, NVIDIA 3- way SLI and Quad-SLI.The X58 chipset is the first motherboard chipset to support the LGA-1366 interface, Triple channel memory, SLI on an Intel chipset and more. ASRock X58 Extreme comes with Intel Socket 1366 Core i7 Processor Extreme Edition / Core i7 Processor Supports Intel Dynamic Speed Technology.

The X58 Extreme motherboard has three 3 PCI Express slots for multiple graphics cards. Triple Channel DDR3 memory technology - 6 x DDR3 DIMM slots - Supports DDR3. The main difference between this board and the X58 SuperComputer is the fact that there are three full-length slots on the board versus four on the X58 SuperComputer.

ASROCK X58 DELUXE : Support Intel processors socket 1366 Core i7 extreme edition; System bus with frequency up to 6400 MT/s; quickPath interconnect Intel standard ; Capacitors ASRock duraCap. ASRock Smart BIOS takes a different approach to saving changes and exiting the BIOS as compared to most motherboards.ASRock X58 Deluxe features include a two-digit Port-80 diagnostics display, power, and reset buttons all located in the lower front corner.