Graphics Media Accelerator Series Are Integrated

The products in this series are integrated onto the motherboard, have limited graphics processing power, and use the computers main memory for storage instead of a dedicated video memory.

They are commonly found on netbooks, low-priced laptops and desktop computers, as well as business computers which do not need high levels of graphics capability.

In early 2007, about 90 of all PC motherboards sold had an integrated GPU.

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Later, Intel integrated the i740 core into the Intel 810 northbridge.

However, with the introduction of Intels 4th generation of GMA architecture ( GMA X3000 ) in 2006, many of the functions are now built into the hardware, providing an increase in performance.

The 4th generation of GMA combines fixed function capabilities with a threaded array of programmable executions units, providing advantages to both graphics and video performance.

Many of the advantages of the new GMA architecture come from the ability to flexibly switch as needed between executing graphics-related tasks or video-related tasks.

While GMA performance has been widely criticized in the past as being too slow for computer games, sometimes being nicknamed Intel GMD (Graphics Media Decelerator) and being essentially referred to as the worlds first graphics decelerator since the S3 ViRGE, the latest GMA generation should ease many of those concerns for the casual gamer.

Intel used the low-power PowerVR MBX designs in chipsets supporting their XScale platform, and since the sale of XScale in 2006 has licensed the PowerVR SGX and used it in the GMA 500 IGP for use with their Atom platform.

It is a 4 pixel per clock cycle design supporting DirectX 9 pixel shader model 2.0.

It operates at a clock rate ranging from 160 to 333 MHz, depending on the particular chipset.

At 333 MHz, it has a peak pixel fill-rate of 1332 megapixels per second.

However, the architecture still lacks support for hardware transform and lighting and the similar vertex shader technologies.

In mobile chipsets, up to two 18-bit 25112 MHz LVDS transmitters are included.

It supports Pixel Shader 2.0 with OpenGL 1.4, but Hardware Vertex Shader isnt supported.

Like GMA 3100 and GMA 3000, this is a very close relative of the GMA900950, completely different from the GMA X3000 series.

Supports up to 384 MB video memory(windows xp driver), DirectX 9.0c, Shader Model 2.0, OpenGL 1.4 with Microsoft Windows and OpenGL 2.1 with Linux.

It has pixel and vertex shaders which only support Shader Model 2.0b features, citation needed and the vertex shaders are still software-emulated.

In addition, hardware video acceleration such as hardware-based iDCT computation, ProcAmp (video stream independent color correction ), and VC-1 decoding are not implemented in hardware.

Of the GMA 3000-equipped chipsets, only the Q965 retains dual independent display support.

The core speed is rated at 400 MHz with 1.6 Gpixels fill rate in datasheets, but was listed as 667 MHz core in the white paper.

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