Select any two GPUs for comparison
Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7670M 2GB are noticeably better than the AMD Radeon HD 7640G + HD 7470M Dual.
The HD 7640G was released less than a year after the HD 7670M, and so they are likely to have similar driver support for optimizing performance when running the latest games.
The HD 7670M has 1024 MB more video memory than the HD 7640G, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 7670M also has superior memory performance overall.
The HD 7670M has 3.2 GB/sec greater memory bandwidth than the HD 7640G, which means that the memory performance of the HD 7670M is marginally better than the HD 7640G.
The Radeon HD 7640G + HD 7470M Dual has 256 Shader Processing Units and the Radeon HD 7670M 2GB has 480. However, the actual shader performance of the HD 7640G is 109 and the actual shader performance of the HD 7670M is 144. The HD 7670M having 35 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7670M delivers a slightly smoother and more efficient experience when processing graphical data than the HD 7640G.
The Radeon HD 7670M 2GB requires 20 Watts to run but there is no entry for the HD 7640G.
|Mini Review||Radeon HD 7640G + HD 7470M Dual is a combination of a Radeon 7640G (integrated graphics) with a Radeon HD 7470M (dedicated). |
This combination is called Asymmetric CrossFire and can also lead to Micro Stuttering.
Benchmarks indicate the performance is better than a single Radeon HD 7470M performing by itself but this will depend a lot from game to game and on the drivers installed.
Radeon HD 7670M 2GB is a Middle-Class Mobile Graphics Card based on the second revision of the Terascale Architecture.
The Second variant of the Terascale 2 Architecture is still manufactured with a 40nm technology and despite allowing more Stream Cores, their design remains more or less the same compared to the first variant.
It equips a GPU codenamed Thames XT which has 6 Compute Units activated and thus offers 480 Shader Processing Units, 24 TMUs and 8 ROPs. The Central Unit runs at 600MHz.
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The memory clock operates at 900MHz.
DirectX 11.0 Support (11.0 Hardware Default) and support for Crossfire, HD3D, Eyefinity, App Acceleration, PowerPlay and other technologies.
With a rated board TDP of 20W, it is suited for average sized laptops.
Gaming benchmarks put its performance somewhere between GeForce GT 540M and GeForce GT 550M.
We recommend a modest processor (Intel Core i3 Mobile and 4GB of RAM for a system with Radeon HD 7670M 2GB.