AMD announces Ati Radeon HD 4000 Mobility for notebooks
At the CES AMD has announced the HD 4000 Mobility series. So the desktop Ati Radeon graphics cards series will also be available for notebooks.
AMD finally announced its HD 4000 graphics cards series for notebooks. In the first quarter notebooks on the basis of the mobility series HD 4300, HD 4500, HD 4600 and HD 4700 are supposed to be released by MSI and Asus.
Like the desktop graphics cards the notebook versions support DirectX 10.1 and the number of stream processors is identical, too. According to AMD among other things the power efficiency mechanisms Powerplay, Power Xpress and the Switchable Graphics Technology have been refined. The last is supposed to enable switching between integrated and discrete graphics in real-time without having to reboot the notebook. Also new: According to AMD the HD 4000 graphics cards are the first cards for notebooks which can pass on 7.1 sound via HDMI and Display Port (4300, 4500 and 4600 only).
With Crossfire X two HD 4000 Mobility cards can be run at the same time. The Asus W90 notebook already benefits from two Mobility Radeon HD 4870 and gains a 15,000 score in 3DMark 06.
AMD has not yet revealed the clock of the notebook graphics cards. First hints are offered by the comparative values of the press release. So the Mobility HD 4670 seems to have 680/800 MHz (GDDR3, 512 MiByte) and the HD 4870 680/700 MHz (GDDR5, 1 GiByte).