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An open-ended PCI-Express 1.1 x4 and PCI make for the other slots. There are four PCI-Express x16 slots here too, but with 1U spacing between them. The board itself is closer to being EATX sized.
#Asus rog crosshair iv extreme Bluetooth
Apart from overclocker-friendly features of the C-4 Formula, C-4 Extreme adds a wide range of electrical enhancements that include better power conditioning with Super ML capacitors, PWM circuitry, voltage measure points, ProbeIT feature, PCI-Express electrical control switches, iROG Bluetooth device control, physically redundant BIOS ROM chips, and a number of other features. The Crosshair IV Extreme, on the other hand, is probably the most complex motherboard for the AMD platform. The board supports the iROG feature, along with a host of other overclocker-friendly features.
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Connectivity includes 8+2 channel audio with SPDIF connectivity, gigabit Ethernet, FireWire, eSATA, two USB 3.0 ports, and a number of USB 2.0 ports. The CPU is powered by a 10+2 phase VRM, with two phase memory power. The SB850 southbridge gives out six SATA 6 Gb/s ports, while an additional controller gives out two 3 Gb/s ports (one being eSATA). The Crosshair IV Formula, to begin with, has six expansion slots, of which four are PCI-Express 2.0 x16 (operating at x8 when all are populated, or x16, NC, x16, NC), and two PCI slots. While the Crosshair IV Formula targets high-end gaming builds, the Crosshair IV Extreme goes all out to woo overclockers. Both motherboards are based on the AMD 890FX + SB850 chipset, and support socket AM3 processors. ASUS makes a return to the higher-end of the AMD platform with two motherboards in its elite Republic of Gamers (ROG) series, with the Crosshair IV Formula and Crosshair IV Extreme.
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