I think the reason they stopped supporting it prob is bc it is too hard to make the UEFI BIOS compatible W/Windows 8. They are even having lots of issues with the RIVE (and other Rampage series?) on that front.
My wife has an R3E (Eve below), I wanted to get one that was UEFI BIOS compatible, for use W/booting partitions over 2TB. Used to have an EVGA X58 SLI, that wouldn't sleep properly - and they never fixed that (S3). So I got on E-bay and bought a brand new RMA replacement R3E. I love it too. These are very nice boards, with all kinds of useful features good for in case you have probs (as you know). And now sleep works perfectly, like it's supposed to. I wouldn't upgrade it to Win8 though. No reason to either.
EVGA X58 SLI --> R3E = Taurus --> Lexus!
I suppose it is unfair to compare their budget X58 board to the Asus top-of-the-line, but still:
EVGA X58 Classified 3 --> R3E = Ford Explorer (basic) --> Hummer!
i7-3930K; Asus RIVE; G.SKILL Ripjaws Z 4x4GB DDR3 1866; MSI 7870 2GD5/OC; Crucial M4 SSD 256GB;
Corsair 1000HX; Corsair H100, 4x Excalibur 120mm PWM CPU Fan p-p, AS5; SB X-Fi Titanium Fata1ity Pro;
Dell U2412m IPS 1920x1200; Cooler Master HAF 932 case; Tripp-Lite OMNIVS1500 UPS fully Line-interactive.
(EVGA site: )
And I have a second (wife's) computer,
Eve.Overclocking is useless to me if it is not rock stable.