Intel Graphics Media Accelerator (GMA) 4700MHD vs Intel Graphics Media Accelerator (GMA) 900
Intel Graphics Media Accelerator (GMA) 4700MHD► remove
The Intel Graphics Media Accelerator 4700MHD (sometimes also called GMA X4700 HD or other combinations) is a DirectX 10 capable onboard graphics adapter in the GM47 chipset of the Centrino 2 platform (Montevina). The chip has no dedicated graphics memory, but takes dynamically an amount from the main memory (up to 384 MB).
Compared to the GMA 4500MHD, the 4700MHD features a higher core clock (plus 107 MHz) and is therefore a bit faster. Compared to the predecessor GMA X3100, the GMA 4500MHD has two more shaders and a 33 MHz higher core clock speed. Therefore, the chip is noticable faster than the older one (especially in 3DMark06). Still, the performance is just on par with the entry level dedicated graphics cards and therefore not suited for demanding games.
A new feature of the GMA chip, are the integrated HD video-decoding functions. The GM45 is able to decode HD-videos in the formats AVC, VC-2, and MPEG-2 to help the CPU. This way a Blu-Ray playback should also be possible with a low end CPU.
Intel Graphics Media Accelerator (GMA) 900► remove
The Intel Graphics Media Accelerator 900 (also known as GMA 900) is an integrated (onboard) graphic chip on the Mobile Intel 915GM chipset for Intel processors. It does not support hardware T&L (Transform & Lightning) calculations (which is required for some games).
It supports DirectX 9.0 with Shader Model 2.0 (Vertex Shader are calculated in Software - by the CPU) and OpenGL 1.4. Furthermore, the chip is able to accelerate the decoding of MPEG2 videos and supports Motion Compensation.
The GMA 900 can not be described as a graphics card that is sufficient for gamers. Still Intel published a list of games that will run (not needingly beautiful) on the notebook. Some old 3D games and especially 2D games should run without problems. The advantage of integrated graphics cards, is that they have a low power consumtion and therefore save battery life. Furthermore, the laptop may stay cooler and more silent than laptops with dedicated graphics cards. For office programs and surfing the performance is more than sufficient.
Currently there are no drivers that support Aero Glass for Windows Vista.
|Intel Graphics Media Accelerator (GMA) 4700MHD||Intel Graphics Media Accelerator (GMA) 900|
|Architecture||Gen. 4.5||Gen. 3|
|Cores||10 - unified||4 / 0|
|Core||640 MHz||400 MHz|
|DirectX||DirectX 10, 4.0||DirectX 9c, 2.0|
|Technology||65 nm||130 nm|
|Features||Enhanced Intel Clear Video Technology, HD Video Decoder (VC/VC2/MPEG2), HDMI mit HDCP Support, Display Refresh Rate Switching Technology, Render Standby||No Hardware Transform and Lightning Support (T&L), MPEG2 acceleration, Motion Compensation|