challapradyumna
Discoverer
The X79 chipset comes with 40 PCIe lanes from the CPU, enough for x16/x8/x8/x8 when using four-way SLI or CrossFire. So what happens when ASRock add two PLX PXE 8747 chips? These chips typically take 16 PCIe 3.0 lanes and essentially switch them into 32, so ASRock are taking 32 lanes from the CPU and making them 64, allowing for x16/x16/x16/x16.
The OC Formula has several features designed specifically for overclocking. The power delivery is very efficient, reportedly around 97% due to a dual-stack MOSFET and Silicon-Chromium chokes. The VRM heatsink is bulky with an additional fan, but is also a water block for water cooled systems. The CPU 12V power delivery uses solid pins for cleaner power delivery and can hold more current under load.
More @ AnandTech - Computex 2012: ASRock's New Motherboards: X79 Extreme11 with LSI SAS and Z77 OC Formula