BenchmarkReviews.com: TUF: The Ultimate Force. ASUS' most stable and reliable motherboard is backed by the industry's best five-year warranty. To attain this honor, the ASUS Sabertooth X79 motherboard endures extreme critical environmental testing that covers low to high chamber room temperatures up to 55°C at 90% humidity. TUF Thermal Armor combined with US mil-spec electronic components ensures this motherboard will remain mission-ready regardless of how extreme an overclocking experiment gets. In this article, Benchmark Reviews tests the ASUS Sabertooth X79 TUF motherboard with Intel's Core i7 3960X Extreme Edition CPU.