HP dc5850 manual Functional Description, Integrated Graphics Processor, Block diagram

Integrated Graphics Processor

6.2 Functional Description

These systems include a graphics subsystem based on the ATI Radeon 3100 controller integrated into the AMD RS780 North Bridge (Figure 6-1). The ATI Radeon 3100 operates off the internal PCIe x16 bus and can directly drive an analog multi-scan monitor or a DVI-D-compatible digital monitor. The ATI Radeon 3100 includes a memory management feature that allocates portions of system memory for use as the frame buffer and for storing textures and 3D effects.

Analog RGB

Monitor

Digital DVI-D

Monitor

PCIe

PEG data

PCIe x16 Graphics Slot

Processor

DDR2 Controller

	RS780
North Bridge
ATI
Radeon	PCIe I/F
3100
Controller

DDR2

SDRAM (System

Memory)

PCIe data

PCIe x1 Slot

Figure 6-1. Integrated Graphics Processor, Block diagram

The IGP provides the following features:

■Fully DirectX 10-compliant 32-bit floating point

■Shader Model 4.0 geometry and pixel support

■Anti-aliasing filter 11

■Aniosotropic filtering

■Advanced texture compression

■3D resources virtualized to a 32b addressing space

■Vertex cache/fetch design

■Full 64b and 132b support for tectures and surfaces

■Up to 8K x 8K texture support (including 128b/pixel texture)

■Multi-level texture cache

■Upgradeable through the PCIe x16 graphics slot

■Multi-monitor support with SurroundView™ technology

The IGP uses a portion of system memory for the frame buffer. The amount of memory used by the IGP may by user-configured (in BIOS) to 32, 64, 128, or 256 megabytes, or set to Automatic. In Automatic mode, the BIOS will select the optimum amount of memory.

6-2 www.hp.com Technical Reference Guide