AMD Radeon HD 8790M, codenamed “Mars XTX”, is a mid-range graphics chip, announced in early Q2 of 2012. It is part of the GCN (Graphics Core Next) generation and is constructed through a 28nm process. Its consists of 368 Radeon cores, 24 texture cores and 8 raster cores.
All of them operate at 850MHz, but the Turbo clock functionality can increase that by a potential 6%, up to 900MHz , based on the laptop’s cooling capacity. The new Enduro technology is available as well. It allows the HD 8790M to switch between integrated and discrete graphics so as to increase battery life.
The chip also has a 128bit bus and is only available with GDDR5 memory. AMD Radeon HD 8790M supports DirectX 11.1, Pixel Shader 5.0, OpenCL 1.2, Zero Core, and the Enduro technology. Memory bandwidth goes up to 144GB/sec.
AMD Radeon HD 8790M (2GB GDDR5) - technical specifications
|Manufacturing Process||28 nm|
|Base frequency||850 MHz|
|Memory Frequency||4000 MHz|
|Memory bandwith||64 GB/sec|
|Date of release||01 April 2012|
|Maximum frequency||900 MHz|
|Memory Capacity||2 GB|
|Memory bus||128 bits|
|Supported technologies||DirectX 11.1, Pixel Shader 5.0, OpenCL 1.2, Zero Core, Enduro Technology.|