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Functional description, 2 functional description – HP D315 User Manual

Page 120

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Chapter 6 Integrated Graphics Subsystem

6.2 FUNCTIONAL

DESCRIPTION


The NVidia NForce 220 chipset includes a graphics processing unit (GPU) integrated into the
integrated graphics processor (IGP) component (Figure 6-1). The graphics controller can directly
drive an external, analog multi-scan monitor at resolutions up to and including 1920 x 1440
pixels. The GPU includes a memory management feature that allocates portions of system
memory for use as the frame buffer and for storing textures and 3D effects.

These systems may be upgraded by installing a separate AGP graphics card in the AGP slot,
which disables the onboard IGC.


Memory
Bus

AGP I/F

DDR SDRAM

System

Memory

AGP Bus

RGB

AGP Slot

Described in Chapter 4

Described in Chapter 3

Hyper Transport

Link

FSB

I/F

SDRAM

Controller

Graphics

Processing

Unit

Monitor

IGP














Figure 6-1. IGP-Based Graphics, Block diagram

The GPU is based on the NVidia GeForce-class of graphics controller and includes the following
features:

♦ Transform and lighting engines.
♦ Per-pixel shading rasterizer.
♦ 256-bit 2D 3D accelerator.
♦ Dual-pixel pipeline with full-speed processing of two textures per pixel
♦ Analog monitor resolution support up to 1920 x 1440




Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor

Second Edition - April 2003

6-2