HP Small Form Factor PC dc5850 6.2 Functional Description

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.

Processor	DDR2
	SDRAM
	(System
DDR2 Controller
	Memory)

				RS780
			North Bridge
Analog		RGB
Monitor		DVI-D	ATI			PCIe
Digital
			Radeon			data
Monitor	PCIe		3100		PCIe I/F		PCIe x1 Slot
			Controller
	PEG data

PCIe x16 Graphics 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