Radeon HD 4000 series on the desktop harvest across the board today, AMD has finally introduced to the field notebooks, and in one breath issued a low-end high school in four sub-series: Mobility Radeon HD 4800/4600/4500/4300. The 4800 series of high-end core code-named M98, there are two new Mobility Radeon HD 4870/4850 models, specifications and desktop version of RV770 core is very similar: 956 million transistors and 800 stream processors ,256-bit GDDR5/GDDR3 memory, support for 24x CFAA antialiasing and support CrossFireX, and have the ability to accelerate game physics.

2009-01-09_194850
Among them, the top models of Mobility Radeon HD 4870 will be the first to introduce notebook GDDR5 memory fields, with a capacity of 1GB, the frequency of 700MHz (equivalent 2800MHz), while the core frequency of 680MHz, up to floating-point computing performance 1TFlops. With the previous generation Mobility Radeon HD 3870 (512MB GDDR3, 660/850MHz) compared to the performance of the card game can raise a maximum of 80%, performance per watt targets 60 percent raise.

The mainstream market-oriented 4600 series core, codenamed M96, there are two new Mobility Radeon HD 4670/4650 models, natural is the brother of the RV730: 5.14 billion in individual tubes, 320 Stream Processor ,128-bit GDDR3/DDR3/DDR2 significantly depositors to support 24x CFAA antialiasing to support CrossFireX, which Mobility Radeon HD 4670 with 512MB GDDR3 memory, core / memory frequency of 680/800MHz.

4500/4300 series of entry-level core, codenamed M98, have a Mobility Radeon HD 4570/4350 and other models are derived RV710 version: 242 million transistors, 80 stream processors ,64-bit GDDR3/DDR3/DDR2 memory, 12x CFAA antialiasing support, not to support CrossFireX.

AMD claims that, according to 3DMark Vantage scores calculated, Mobility Radeon HD 4330 per watt 100.132 points, while the previous generation Mobility Radeon HD 3410 only 26.7 points, raise as much as 275 percent.

The above graphics are core 55nm process, support for DX10.1 and OpenGL 2.0, integrated hardware decoding engine UVD2 and integrated 7.1-channel HDMI module, support for DisplayPort output to support the PowerPlay, PowerXpress, Swithable Graphics series of energy-saving technologies, but most low-end Mobility Radeon HD 4300 series lack of Avivo HD technology DVD Upscaling and dynamic contrast ratio.

Overall, the 4000 series of graphics cards and notebook version of the desktop version of the core specifications, whether or model names are one-to-one, but the latter will take care of power frequency on some slightly lower frequency, but also support more energy-saving technology . At a time when consumers can buy HKTB launched, the general will not be any confusion.

Asus, MSI and other manufacturers will soon be launching the new series of graphics cards based on the notebook, such as Asustek N51Tp, N81Vp equipped with Mobility Radeon HD 4650, F81Se equipped with Mobility Radeon HD 4570, MSI GT725 is equipped with Mobility Radeon HD 4800 series, EX625 is equipped with Radeon HD 4600 series.