Video Controller

The S845WD1-E server board provides an ATI Rage XL PCI graphics accelerator, along with

2 MB of video SDRAM and support circuitry for an embedded SVGA video subsystem. The ATI Rage XL chip contains a SVGA video controller, clock generator, 2D and 3D engine, and RAMDAC in a 272-pin PBGA. One 2Mx32 SDRAM chip provides 2 MB of video memory.

The SVGA subsystem supports a variety of modes, up to 1600 x 1200 resolution in 8/16/24/32 bpp modes under 2D, and up to 1024 x 768 resolution in 8/16/24/32 bpp modes under 3D. It also supports both CRT and LCD monitors up to 100 Hz vertical refresh rate.

The S845WD1-E server board provides a standard 15-pin VGA connector and supports disabling of the on-board video through the BIOS Setup menu or when a plug-in video card is installed in the AGP slot or any of the PCI slots.

Video Modes

The Rage XL chip supports all standard IBM VGA modes. The following table shows the 2D/3D modes supported for both CRT and LCD. The table specifies the minimum memory requirement for various display resolution, refresh rates, and color depths.

Table 11.

Video Modes

 

 

 

 

2D Mode

 

Refresh Rate (Hz)

S845WD1-E 2D Video Mode Support

 

 

8 bpp

16 bpp

24 bpp

32 bpp

640x480

 

60, 72, 75, 90, 100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

800x600

 

60, 70, 75, 90, 100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1024x768

 

60, 72, 75, 90, 100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1280x1024

 

43, 60

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1280x1024

 

70, 72

Supported

Supported

Supported

 

 

 

 

 

 

 

1600x1200

 

60, 66

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1600x1200

 

76, 85

Supported

Supported

Supported

 

 

 

 

 

 

 

3D Mode

 

Refresh Rate (Hz)

S845WD1-E 3D

Video Mode Support with Z Buffer Enabled

640x480

 

60,72,75,90,100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

800x600

 

60,70,75,90,100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1024x768

 

60,72,75,90,100

Supported

Supported

Supported

Supported

 

 

 

 

 

 

 

1280x1024

 

43,60,70,72

Supported

Supported

 

 

 

 

 

 

 

1600x1200

 

60,66,76,85

Supported

 

 

 

 

 

 

 

Description

37

Page 37
Image 37
Intel S845WD1-E manual Video Controller, Video Modes, 3D Mode Refresh Rate Hz, Video Mode Support with Z Buffer Enabled