Graphics Subsystem; Table 2-4. Graphics Subsystem - HP Deskpro EX Technical Reference Manual

Chapter 2 System Overview

2.4.8 GRAPHICS SUBSYSTEM

Two types of graphics subsystems are offered as standard in these systems:
815-based embedded
Separate NVIDIA card in AGP slot
The 82815 GMCH component includes an AGP 4X interface and an i740-equivalent graphics
controller. The embedded configuration uses the controller integrated within the 82815 GMCH to
drive an RGB monitor. The separate AGP card configuration features an nVIDIA graphics
controller card that, due to its presence on the AGP bus, disables the embedded 815-based
controller. The AGP 4X interface of the 82815 GMCH is utilized in both configurations. Dual-
monitor support is possible by adding a PCI graphics card to either configuration.
These systems provide an AGP slot that is used for either mounting an AGP graphics card or for
mounting a GPA card that supports the 815-based controller. The AGP slot includes both Type 1
and Type 2 retention mechanisms.
Table 2-4 lists the key features of the three types of graphics subsystems available in these
systems:
Table 2-4. Graphics Subsystem Comparison
Controller Type
Bus Type
Local Memory
Memory Speed
Maximum Res. @
# of colors [2]
2D Eng. Features
3D Eng. Features
Video I/F
Upgrade method
NOTE:
[1] Dynamic Video Memory Technology (DVMT) allocates portions of system memory, which may
supplemented by an optional 4-MB Graphics Performance Accelerator (GPA) card.
[2] With 75-Hz vertical refresh.
2-16 Compaq Deskpro EX Series of Personal Computers
Table 2-4.
Graphics Subsystem Comparison
Integrated 815
Graphics Controller
i740 equiv.
AGP 4X
DVMT [1]
100 MHz
1600 x 1200 @ 256
3 ROP BtBLT
Line Draw
Text
Color Expansion
Video Color Conv.
Triangle Setup Eng.
Texture Mapping
Flat/Gouraud Shading Flat/Gouraud Shading
Trilinear Filtering
No
Disabling cntlr. by Replacing AGP card
adding AGP card
First Edition – August 2000
NVIDIA Vanta LT
Graphics Card
Vanta Cntlr.
AGP 2X
8 MB SDRAM
100 MHz
1600 x 1200 @ 65K 16 MB: 1600 x 1200 @ 65K
32 MB: 1600x 1200 @ 16.7M
3 ROP BtBLT
Transparent BLT
Stretch BLT
Line, Poly Draw
Text
Color Expansion
Video Color Conv
Triangle Setup Eng.
Texture Mapping
Trilinear Filtering
Anisotropic Filtering
TwinTexel Engines
No
NVIDIA M64
Graphics Card
M64
AGP 4X
16 or 32 MB SDRAM
133 MHz
3 ROP BtBLT
Transparent BLT
Stretch BLT
Line, Poly Draw
Text
Color Expansion
Video Color Conv
Triangle Setup Eng.
Texture Mapping
Flat/Gouraud Shading
Trilinear Filtering
Anisotropic Filtering
TwinTexel Engines
Yes
Replacing AGP card