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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7670M 2GB DDR3 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 DDR3 has 480. However, the actual shader performance of the HD 7640G is 109 and the actual shader performance of the HD 7670M is 158. The HD 7670M having 49 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.

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GPU Core Details

Core Speed655 MHzvs600 MHz
ArchitectureDevastatorTerascale 2 Thames XT
Notebook GPUyesyes
Release Date01 Jun 201201 Jan 2012
GPU LinkGD LinkGD Link

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed800 MHzvs900 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth25.6GB/secvs28.8GB/sec
L2 Cache - vs green tick 256 KB

GPU Display

Shader Processing Units256vs480
Actual Shader Performance109vs158
Texture Mapping Units-vs24
Texture Rate-vs14.4 GTexel/s
Render Output Units-vs16
Pixel Rate-vs9.6 GPixel/s

GPU Display Tech

Shader Model5.0vs5.0
Open GL4.1vs4.2
Max Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs0
DVI Connections0vs1
HDMI Connections0vs0

GPU Power Requirements

Max Power--

GPU Supporting Hardware

Recommended RAM-6 GB
Recommended Screen Size-1366x768
Recommended PSU--

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon 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 DDR3 is an upper middle-class level GPU part of the 7000M Series released by AMD.
It's technically a rename of the middle-class Radeon HD 6650M and the 2GB frame buffer is a gimmick as Radeon HD 7670M 2GB DDR3 does not have enough bandwidth and is not power enough to use 1GB of video memory, let alone 2GB.
Very Demanding games like Metro 2033 might be playable at medium settings (depending on the resolution + DirectX Version used) while demanding games like Crysis 2 are probably playable at high settings. Old and less demanding games like COD: Black Ops should be playable at max settings easily.
Recommended CPU-Intel Core i7-740QM 4-Core 1.73GHz
Intel Core i7-3537U 2-Core 2.0GHz
Intel Core i5-3230M 2.6GHz
Intel Core i5-2540M 2.6GHz
Intel Core i7-4610Y 2-Core 1.7GHz
Possible GPU Upgrades--
GPU Variants--