AMD introduces Radeon 7900M series for notebooks

Hardware manufacturer AMD has the first new gpu’s from the 7000M-series for notebooks unveiled. It comes to the 7700-, 7800 – and 7900-series, all of which are based on AMD’s new gcn architecture and 28nm are manufactured.

The new mobile gpu’s are the first ones on the latest desktop version are based. At the end of last year AMD introduced the slower cards in the 7000M series, but that were rebrands of models from the 6000M series. The 7700-, 7800 – and 7900-series are based on the graphics core next architecture, AMD also for the desktopvarianten used.

The top model is the HD7970, which has 1280 stream processors, 80 texture units and 32 rops. The Pitcairn gpu has a clock speed of 850MHz and through a 256-bit memory bus connected to 2GB of gddr5 memory with an effective clock speed of 4800MHz. Thus the performance of the gpu is somewhere between that of the HD 7850 and the HD 7870 for desktop.

The 7800M and HD7700 series are based on the Cape Verde gpu, and have less stream processors, rops and tmu’s. Also are the gpu and the memory is lower clocked. Where the HD7900 and HD7800-series have support for pci-express 3.0, is that the HD7700-series omitted.

SerieGpuGeheugen
BusStream-procs.Rops and Tmu’s

HD7900M
850MHz
2GB-gddr5 @ 4800MHz
256bit
1280
32
80

HD7800M
800MHz
1GB-gddr5 @ 4000MHz
128bit
640
16
40

HD7700M
675MHz
1GB-gddr5 @ 4000MHz
128bit
512
16
32

AMD would be some new techniques, committed to the power consumption of the new gpu’s as low as possible. In addition to the ZeroCore technology, which have been inherited from the desktop-variants, used AMD a technique that the Enduro has been baptized. On systems that are powered by an apu from AMD with built-in gpu, thanks to Enduro quickly switch between the igp and discrete graphics.