Both of these motherboards look identical, the only difference is that the Extreme uses DDR3 while the Formula uses DDR2. Other than that, it is very difficult to finding physical differences between them. The Blitz motherboards use Intel's P35 chipset and pack more features than you can shake a stick at. These motherboards have a better Crossfire capabilities, because Asus use a special chipset called CrossLinx, which effectively makes each PCIe slot function as 8x, instead of the 16x 4x combination like in the ASUS Commando.
These computer motherboards also have a northbridge with heatsink ready for water, Voltiminder LEDs, Extreme Tweaking ability, external LCD Poster, Supreme FX II sound card, on-board power on/off and reset, in addition to a quick BIOS reset, Q-Connector, spare chipset fans, feet for an external install, temperature diodes, STALKER and 3D Mark 06. The LCD poster is used to connecting a port on the motherboard and can sit on your computer or desk. Whenever the BIOS makes a query, it will display on this poster. When nothing is going on, a digital clock is displayed instead. This is all done on a very bright blue backlit screen.
Here is some technical data about this Intel motherboard :
Processor : Intel LGA775 processors (include Intel next generation 45nm Multi-Core CPU)
Chipset : Intel P35 / ICH9R with Intel Fast Memory Access Technology
FSB : 800 / 1066 / 1333 MHz
Memory : 4 x DDR2 (677/800/1066 MHz) -- Formula version; 4 x DDR3 (800/1066/1333 MHz) -- Extreme version
Multiplier : Auto
Form Factor : ATX (30.5cm x 24.5cm)
AGP/PCI/PCIe x16/PCIe x4/PCIe x1 : 0/2/2/0/3
USB/FireWire/Serial/Paralel : 6(6)/1(1)/0/0
PATA/SATA/eSATA : 1/6/0
Accessories : Fusion Block System Accessory, LCD Poster, DIY Pedestal
ASUS Optional Fan, SupremeFX II Audio Card, 3 in 1 ASUS Q-Connector Kit , UltraDMA 133/100/66 cable, Floppy disk drive cable, SATA cables, SATA power cables, 2-port USB2.0 + IEEE 1394a module, I/O Shield, Cable Ties, User's manual
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