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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7640G + HD 7470M Dual Radeon HD 7750 Sapphire 2GB DDR3 Edition
Fallout 4 1042% 295%
Assassins Creed: Syndicate 687% 173%
Call of Duty: Black Ops 3 648% 159%
Just Cause 3 1042% 295%
Star Wars: Battlefront 1107% 318%
Rainbow Six: Siege 753% 195%
Need For Speed 648% 159%
FIFA 16 320% 45%
Rise of the Tomb Raider 215% 9%
Overwatch 543% 123%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7750 Sapphire 2GB DDR3 Edition are massively better than the AMD Radeon HD 7640G + HD 7470M Dual.

The HD 7750 was released less than a year after the HD 7640G, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The HD 7750 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 7750 also has superior memory performance overall.

The memory bandwidth of the Radeon HD 7640G + HD 7470M Dual and the Radeon HD 7750 Sapphire 2GB DDR3 Edition are the same, which means the HD 7640G and the HD 7750 have equal limitations when it comes to graphical data transfer.

The Radeon HD 7640G + HD 7470M Dual has 256 Shader Processing Units and the Radeon HD 7750 Sapphire 2GB DDR3 Edition has 512. However, the actual shader performance of the HD 7640G is 109 and the actual shader performance of the HD 7750 is 348. The HD 7750 having 239 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7750 delivers a noticeably smoother and more efficient experience when processing graphical data than the HD 7640G.

We would recommend a PSU with at least 400 Watts for the HD 7750, but we do not have a recommended PSU wattage for the HD 7640G.

Can I Run It

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Check any game system requirements


GPU Architecture

Core Speed655 MHzvs800 MHz
Boost Clock-vs-
ArchitectureDevastatorGCN 1.0 Cape Verde PRO
OC Potential - vs Good
Driver Support - vs -
Release Date01 Jun 2012vs01 Aug 2012
GPU LinkGD LinkGD Link

Resolution Performance

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

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed800 MHzvs800 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth25.6GB/secvs25.6GB/sec
L2 Cache - vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 8% vs green tick 9%

GPU Display

Shader Processing Units256vs512
Actual Shader Performance5%vs17%
Texture Mapping Units-vs32
Texture Rate-vs25.6 GTexel/s
Render Output Units-vs16
Pixel Rate-vs12.8 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs1
DVI Connections0vs1
HDMI Connections0vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power--
Recommended PSU-400 Watts

GPU Features

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

GPU Supporting Hardware

Recommended Processor--
Recommended RAM--
Maximum Recommended Gaming Resolution--

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 7750 Sapphire 2GB DDR3 Edition is a special edition of the fast-middle-class Radeon HD 7750 1GB DDR3.
This version has no new features (when compared to the DDR3 version) and so it performs exactly like it.
Recommended CPU--
Possible GPU UpgradesN/A-
GPU Variants--