About my system can be said
1005 is OK but lack of stability in PCIE 3.0 x 16 Mode with HD7970 Quad or Tri SLI usage.
1101 is very badass for OC
0015b is perform well it RAM Overclocking
0016b is nothing different but may strongly support DDR3 2400+
1202 is OK with everything same as 0015b + 0016b
1305 is idiot for Overclocker , it took more Vcore , Vccsa , CPU Pll for stable above 4.8GHz+ and 125MHz+ Bclk
1404 is some how 1305 with lower Vcore , Vccsa , CPU Pll usage and trying to support GTX6XX in PCIE 3.0 x 16 but failed in actual.
You need to go with patched registry tool.
The Best of mine was 1404 MOD. Very smart and awesome from our friend here! Still love his intelligence for all mankind with ROG X79 family.
BOLTS4BREKFAST BIOS MOD is king
Intel Core i7 3960X 😮 C2 SR0KF 😮 @3.3GHz ASUS RAMPAGE IV EXTREME BIOS 3602 03/15/2013 16 GB GSKILL ZL 9-9-9-24-1T @1600MHz Quad Channel HIS HD7979 1050MHz GPU 1500MHz DDR5 120GB OCZ VERTEX 3 SATA 6Gbps ASUS 24X DVD Corsair AX750 WINDOWS 8 PRO X64 6.2.9200.16384 RELEASE😮