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BIOS/UEFI
The DZ77GA-70K features Intel's new Visual BIOS, a UEFI with a graphical interface similar to what Asus started doing with their series 6 chipset motherboards. Gone is plain white text on black background UEFI, replaced with a cool blue mouse-enabled system.
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The default screen is a basic setup menu. A simple slider allows users to tweak the CPU, GPU, and memory speeds. Voltage and other settings are changed automatically to ensure a safe overclocking experience. A few shortcuts are provided to various advanced sections of the menu.
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The Processor section of the Advanced Setup menu is more complicated obviously, allowing users to more expertly control the experience. Values can can be typed in manual or selected from a drop box list.
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BIOS Summary: Intel DZ77GA-70K
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Setting
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Options
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| Host Clock |
100 to 120 MHz |
| CPU Voltage |
1.000 to 1.920 V |
| CPU Voltage Offset |
20 to 1000 mV |
| Core Ratio Limit |
5 to 65 |
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Burst Mode Power Limit
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0 to 1000 W (120 W default) |
| Sustained Mode Power Limit |
0 to 500 W (95 W default) |
| Sustained Mode Time |
1 to 32 secs (1 sec default) |
| CPU TDC Current Limit Override |
0 to 200 A (112 A default) |
| Processor PLL Voltage |
1.50 to 2.40 V (1.85 V default) |
| Processor I/O Voltage |
1.00 to 1.80 V (1.05 V default) |
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Processor System Agent
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0.850 to 1.750 V (0.925 V default) |
| Memory Multiplier |
DDR3-1067, 1333, 1600, 1867, 2133, 2400, 2667 |
| Memory Voltage |
1.2 to 2.0 V |
The voltage options offered are extreme, allowing the CPU to be pumped up to
1.92 V and the memory to 2.0 V, so discretion is advised. The clock frequency
however, has a hard limit of just 120 MHz: Series 7 motherboards have the same
integrated clock generator as series 6, tying the base CPU frequency with other
peripherals like the SATA and PCI-E bus. Slight adjustments can cause data corruption
and general instability.
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Fan control settings.
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Temperature control settings.
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The fan control options are impressive. Each fan header can be assigned a minimum/maximum
speed and a function, linking its speed to a particular temperature sensor;
Most fan control systems react to CPU temperature only. Fan speed behavior can
be further tweaked by setting temperature ranges, and fine-tuned by changing
the responsiveness/damping options to dictate how quickly it reacts and how
smoothly it should do so.
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