Integrated Graphics Subsystem

Each system implements one of two IGC types; the Intel HD Graphics 2000 or the Intel HD Graphics 3000, depending in the processor installed. Table 6-1 lists the type of IGC associated with the types of processor supported by these systems.

Table 6-1

Supported Intel Processor IGC Specifications

 

 

 

Graphics

 

Intel

 

 

Clock Rate

# of Graphics

Series

Model

IGC Type

Standard

Turbo

Execution Units

Core i7

2600K

HD 3000

850 MHz

1350 MHz

12

 

2600

HD 2000

850 MHz

1350 MHz

6

 

2600S

HD 2000

850 MHz

1350 MHz

6

Core i5

2500K

HD 3000

850 MHz

1100 MHz

12

 

 

 

 

 

 

 

2500

HD 2000

850 MHz

1100 MHz

6

 

2500S

HD 2000

850 MHz

1100 MHz

6

 

2500T

HD 2000

650 MHz

1250 MHz

6

 

 

 

 

 

 

 

2400

HD 2000

850 MHz

1100 MHz

6

 

2400S

HD 2000

850 MHz

1100 MHz

6

 

2300

HD 2000

850 MHz

1100 MHz

6

 

 

 

 

 

 

 

2390T

HD 2000

650 MHz

1100 MHz

6

Core i3

2120

HD 2000

850 MHz

1100 MHz

6

 

2105

 

850 MHz

 

 

 

 

 

 

 

 

 

2100

 

850 MHz

 

 

 

2100T

 

650 MHz

 

 

Pentium

G850

HD 2000

850 MHz

1100 MHz

6

 

 

 

 

 

 

 

G840

 

850 MHz

 

 

 

G620

 

850 MHz

 

 

 

G620T

 

650 MHz

 

 

 

 

 

 

 

 

The IGC uses a portion of system memory for instructions, textures, and frame (display) buffering. At boot time, 32 megabytes of system memory is pre-allocated for the graphics controller whether using Windows XP, Windows Vista, or Windows 7. Using a process called Dynamic Video Memory Technology (DVMT), the IGC dynamically allocates display and texture memory amounts according to the needs of the application running on the system.

6-2

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Technical Reference Guide