MSI 915GLM4 User Guide - Page 46

Advanced Chipset Features

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BIOS Setup Advanced Chipset Features MSI Reminds You... Change these settings only if you are familiar with the chipset. Configure DRAM Timing by SPD Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to [Auto By SPD] enables DRAM timings and the following related items to be determined by BIOS based on the configurations on the SPD. Selecting [Manual] lets users configure the DRAM timings and the following related items manually. Setting options: [Manual], [Auto By SPD], [Turbo], [Ultra]. Memory Hole In order to improve performance, certain space in memory can be reserved for ISA peripherals. This memory must be mapped into the memory space below 16MB. W hen this area is reserved, it cannot be cached. Settings: [Disabled], [15MB-16MB]. Int. Gfx Memory Size Select (for 915G Only) The field specifies the size of system memory allocated for video memory. Setting options: [Disabled], [Enabled, 1MB], [Enabled, 8MB]. Aperture Size Select (for 915G Only) This setting controls just how much system RAM can be allocated to IGD (internal graphic display) for video purposes. The aperture is a portion of the PCI memory address range dedicated to graphics memory address space. Host cycles that hit the aperture range are forwarded to the IGD without any translation. The option allows the selection of an aperture size of [128MB], and [256 MB]. 3-11

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3-11
BIOS Setup
Advanced Chipset Features
Configure DRAM Timing by SPD
Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect)
EEPROM on the DRAM module. Setting to [Auto By SPD] enables DRAM timings
and the following related items to be determined by BIOS based on the configu-
rations on the SPD. Selecting [Manual] lets users configure the DRAM timings
and the following related items manually. Setting options: [Manual], [Auto By
SPD], [Turbo], [Ultra].
Memory Hole
In order to improve performance, certain space in memory can be reserved for
ISA peripherals. This memory must be mapped into the memory space below
16MB. When this area is reserved, it cannot be cached. Settings: [Disabled],
[15MB-16MB].
Int. Gfx Memory Size Select (for 915G Only)
The field specifies the size of system memory allocated for video memory.
Setting options: [Disabled], [Enabled, 1MB], [Enabled, 8MB].
Aperture Size Select (for 915G Only)
This setting controls just how much system RAM can be allocated to IGD
(internal graphic display) for video purposes. The aperture is a portion of the
PCI memory address range dedicated to graphics memory address space.
Host cycles that hit the aperture range are forwarded to the IGD without any
translation. The option allows the selection of an aperture size of [128MB], and
[256 MB].
MSI Reminds You...
Change these settings only if you are familiar with the chipset.