VRMs were getting a bit toasty. So I made a fan bracket out of an old PCIE slot cover that was just long enough to fit between my RAM on both sides.
Asus Sabertooth X79 Review | bit-tech.net
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Asus Sabertooth X79 Motherboard Preview | eTeknix
Amazon.com: ASUS Sabertooth X79 LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard : Electronics
5 jumper, Jumper -14, Chapter 2 | Asus SABERTOOTH X79 User Manual | Page 32 / 148 | Original mode
Asus SABERTOOTH X79 User Manual | 1 page | Also for: RAMPAGE IV GENE, Rampage IV Formula, P9X79 PRO, P9X79 DELUXE, P9X79