Maximus IV Extreme Bios and Sandybridge CPU Overview.
(Remember you Overclock at your own risk. ASUS is not held responsible for any damages that may occur)
NEW BIOS -RAJA@ASUS
1409 , changes Over 1407 – adds bios rom flash back -> from one rom to another -> to fix problem of BCLK unable to change.
‘System will shutdown to do BIOS Flashback. Do not turn off AC while you see the ROG Connect LED blinking. It will take up to 8 minutes, please be patient.’
First off, all ASUS P67 (sandybridge) motherboards now use a UEFI graphic user interface BIOS. This means you have a clean GUI layout with mouse support. We'll go through the bios screen shots along with some sandybridge cpu info
EZ mode is pretty easy. In a clean ROG theme, it simply shows you the important information you need like; Motherboard name, bios version, CPU type, memory type, cCPUfrequency, language options, CPU/MB temperatures, Voltage for the CPU your PSU voltage, and Fan speed. You also have a quick system performance for the novice for energy saving mode (basically down clocking your cpu), normal mode, and high performance (slight overclock)
You can also drag and drop your boot priority with your mouse. whether you have an optical drive, ssd, hdd, usb, etc. Just drag and drop in the order you want it to boot.
In Advanced mode, you get all of the features you would normally see in a bios but with the ROG theme and tweakable options.
CPU Level up gives you a quick overclock for your CPU. typically 2500k and 2600k can usually hit up to 4.8-5.0 ghz, this still gives you a safe range with auto settings.
Turbo Ratio allows you to set individual core ratios, or synchronize all cores at the same time.
Internal PLL Overvoltage. You can set this to enable to allow some additional overclocking headroom. Note that once you enable this function your sleep and hibernate will be disabled. With overvoltage enabled, most users should see their 2500k and 2600k hit 4.7-5.0ghz.
memory frequency shows you a list of frequencies.
Or you can set your Dram timings manually
GPU post / Dimm post shows you real time GPU lane configurations. You can see in real time what speeds your pci-e lanes are running at. No need to bug others whether or not you have the best configuration possible, figure it out yourself! haha Dimm post gives you real time memory frequencies.
In the CPU Ratio you can set this as auto or define the ratio for all cores.
Load line calibration will stabilize CPU voltage under load. It will try and compensate for the Vdroop or drop in voltage that occurs.
Monitor your voltages, fan speed, configure fan profiles,