AMD Radeon HD 7700M, 7800M, 7900M Laptop GPUs Announced

AMD Radeon HD LogoAMD has expanded its Radeon 7000M laptop video card series with three new SKUs which populate higher-end segment.

Besides the lower-end 40-nanometer Radeon HD 7000M GPUs which are rebrands of the old 6000M line with some minor changes, AMD now offers the Radeon HD 7700M, 7800M, and 7900M based on the new 28nm production process and Graphics Core Next (GCN) architecture. The new DirectX 11 GPUs are aimed at use in higher-peroformance and gaming laptops. The chips bring improvements in performance and power consumption and they compete against Nvidia’s “Kepler” GeForce 600M mobile chips for the same notebook segment.

The first 7000M models listed on AMD.com are the Radeon HD 7770M, 7870M, and 7970M. In the table below you can see their specs. We also included the 40nm 7670M for comparison purpose. AMD is also expected to release the top-of-the-line 7990M, but the card hasn’t been announced yet.

AMD Radeon HD Model HD 7670M HD 7770M New! HD 7870M New! HD 7970M New!
Stream Processors 480 640 640 1280
Texture Units 24 40 40 80
Z/Stencil ROP Units 32 64 64 128
Color ROP Units 8 16 16 32
Memory Interface 128-bit GDDR5 or DDR3 128-bit GDDR5 128-bit GDDR5 256-bit GDDR5
Memory Amount 1GB Up to 2GB 2GB 2GB
Engine Clock 600 MHz 675 MHz 800 MHz 850 MHz
Memory Clock 900 MHz 1000 MHz (4.0 Gbps) 1000 MHz (4.0 Gbps) 1200 MHz (4.8 Gbps)
Bus Interface PCI Express 2.1 x16 PCI Express 2.1 x16 PCI Express 3.0 x16 PCI Express 3.0 x16

AMD has also unveiled Enduro solution for dynamic switching between the Radeon dedicated video cards and integrated on-CPU GPUs, optimizing graphics performance and battery life on laptops. For the same purpose Nvidia uses Optimus technology.

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