Uhm.. I have X51 R2 with last BIOS A12 and i wonder if there will be more future updates with new features. BIOS on X51 R2 is very barebone, almost nothing si possible to setup what is ridiculous since Alienware pretending to be gamming PC. I personally miss configuration for PWM fans since they are setup very agresivelly and noisy durring gameplay, specially CPU fan which don't need to go over 1800-2000 RPM to keep stable temperatures is by default is running mostly around 2500-2600 RPM and sounds like a jet.. Also option to turn On/Off Intel Turbo Boost technology in BIOS is missing which mostly useless and can save some temps. Not to mention fact that Alienware Command Center is old and not updated anymore. It could at least support custom fan configurations if DELL would care a bit more. Really sad for a "gaming" desktop. I will not buy Alienware again when my X51 R2 dies one day..