XFX uses a modified version of the American Megatrends AMIBIOS for their nForce 750a SLI board. The board BIOS is split into Main, Advanced, Boot, Security, Power, JUSTW00T and Exit submenus. The Main menu has the System Overview including System Information, the various drives and SATA Ports detected and the USB Device menu.
Advanced Settings has CPU Configuration, Chipset, Onboard Devices and PCIPnP menus. The CPU Configuration menu is where you turn on GART Error Reporting, Microcode Updating, Secure Virtual Machine Mode, Cool ‘n’ Quiet, and ACPI SRAT Mode. It also displays the CPU name, which revision, cache amounts, speed and whether the CPU is unlocked.
The Chipset menu is where you enable Hybrid SLI, SLI, the Primary Graphics Adapter, the integrated graphics and external VGA selection, the IGPU Frame Buffer Detect and the IGPU Frame Buffer size. Note that you need to set jumpers in order to enable true SLI support. Also setting Hybrid SLI to Enabled automatically disables SLI support, sets Internal VGA first, Both exist and IGP, IGPU to Auto and the Frame buffer memory to 256MB.
The overclocking menus are set in the JUSTW00T menu. The settings available for the overclocking are summarized in this chart:
| XFX nForce 750a BIOS settings | Range |
| VID | Auto, 0.800V-1.550V in 0.025V increments |
| CPU Voltage | Auto, 1.000v-1.450v in 0.050v increments |
| SB Voltage | Auto, 1.000v-1.450v in 0.050v increments |
| DRAM Voltage | +0.05v-+0.35v in 0.05v increments |
| Chipset Voltage | 0.030v-0.090v in 0.030v increments |
| SB to K8 (CPU) Linkwidth | 4/4, 8/8, 16/16 (up/down) |
| SB to K8 (CPU Frequency) | Auto, 200MHz-2600MHz in 200MHz increments |
| CPU overclocking | Auto, AutoL, AutoM, AutoH 200-400 in 1MHz increments |
| CPU PLL Voltage | Auto, 1.5V-2.78V in 0.02V increments |
| Memory Clock Value | 200, 266,333, 400, 533MHz |
BIOS Shots
