Asus CROSSHAIR IV FORMULA User Guide - Page 90
CPU VDDA Voltage [Auto], DRAM Voltage [Auto] - northbridge
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CPU/NB Offset Voltage [Auto] This item appears only when you set the CPU & NB Voltage Mode item to [Offset] and allows you to set the CPU/NB Offset voltage. The values range from 0.006250V to 0.700000V with a 0.006250V interval. CPU Voltage [Auto] This item appears only when you set the CPU & NB Voltage Mode item to [Manual] and allows you to set a fixed CPU voltage. CPU/NB Voltage [Auto] This item appears only when you set the CPU & NB Voltage Mode item to [Manual] and allows you to set a fixed CPU/NB voltage. 3.3.11 CPU VDDA Voltage [Auto] Allows you to set the CPU VDDA voltage. The values range from 2.20000V to 3.18750V with a 0.01250V interval. 3.3.12 DRAM Voltage [Auto] Allows you to set the DRAM voltage. The values range from 1.20000V to 2.90000V with a 0.01250V interval. 3.3.13 HT Voltage [Auto] Allows you to set the HyperTransport voltage. The values range from 0.80000V to 2.00000V with a 0.01250V interval. 3.3.14 NB Voltage [Auto] Allows you to set the Northbridge voltage. The values range from 0.80000V to 2.00000V with a 0.01250V interval. 3.3.15 NB 1.8V Voltage [Auto] Allows you to set the Northbridge 1.8V voltage. The values range from 1.802000V to 3.007750V with a 0.013250V interval. 3.3.16 SB Voltage [Auto] Allows you to set the Southbridge voltage. The values range from 1.113000V to 1.802000V with a 0.013250V interval. 3.3.17 VDDR Voltage [Auto] Allows you to set the VDDR voltage. The values range from 1.205750V to 1.802000V with a 0.013250V interval. 3-14 Chapter 3: BIOS setup