You may use the "older" BIOS if you wish, it uses a different microcode that suits some of the "cheaper" memory ICs used by some vendors. Everything else in that BIOS build is the same as the newer build.
Same thing has been happening to me - stock setup except for an XMP profile on G.Skill memory at 2133 (32GB). This is with 0901 bios version (latest on the web site). PSU is a 1200W Enerimax. SLI EVGA 580s.