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GD Star Rating

Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7640G + HD 7470M Dual Radeon HD 7670M 2GB
Battlefield 1 1304% 1089%
Civilization VI 806% 667%
Mafia III 1186% 989%
Forza Horizon 3 1517% 1269%
FIFA 17 359% 289%
Call of Duty: Infinite Warfare 766% 633%
Farming Simulator 17 517% 422%
Watch Dogs 2 1107% 922%
Star Citizen 1225% 1022%
Gears of War 4 1517% 1269%

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.

Can I Run It

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GPU Architecture

Core Speed655 MHzvs600 MHz
Boost Clock-vs-
ArchitectureDevastatorTerascale 2 Thames XT
OC Potential - vs Good
Driver Support - vs -
Release Date01 Jun 2012vs07 Jan 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - vs green tick
1600x900 - vs green tick
1920x1080 - vs green tick
2560x1440 - vs green tick
3840x2160 - green tick vs green tick -

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
Delta Color Compression no vs no
Memory Performance 8% vs green tick 10%

GPU Display

Shader Processing Units256vs480
Actual Shader Performance5%vs7%
Texture Mapping Units-vs24
Texture Rate-vs14.4 GTexel/s
Render Output Units-vs16
Pixel Rate-vs9.6 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs0

GPU Power Requirements

Max Power-20 Watts
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.1vs4.2
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended Processor-Intel Core i3-3110M 2.4GHz
Recommended RAM-4 GB
Maximum Recommended Gaming Resolution-1366x768

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 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.

Power Consumption
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.

System Suggestions
We recommend a modest processor (Intel Core i3 Mobile and 4GB of RAM for a system with Radeon HD 7670M 2GB.
Recommended CPU-AMD APU A10-4600M Quad-Core
Intel Core i3-3120ME 2.4GHz
Intel Core M-5Y71
Intel Core i3-3110M 2.4GHz
APU A10-7300 Quad-Core
Possible GPU UpgradesN/AN/A
GPU Variants--