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AMD Seymour

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Seymour
Block Diagram
Block Diagram
AMD's Seymour GPU uses the TeraScale 2 architecture and is made using a 40 nm production process at TSMC. With a die size of 67 mm² and a transistor count of 370 million it is a very small chip. Seymour supports DirectX 11.2 (Feature Level 11_0). For GPU compute applications, OpenCL version 1.2 can be used. It features 160 shading units, 8 texture mapping units and 4 ROPs.
Further reading: TeraScale 2 Instruction Set Architecture

Graphics Processor

GPU Name
Seymour
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
370 million
Density
5.5M / mm²
Die Size
67 mm²
Released
Oct 19th, 2010

Graphics Features

DirectX
11.2 (11_0)
OpenGL
4.4
OpenCL
1.2
Vulkan
N/A
Shader Model
5.0
Compute
GFX4

Render Config

Shading Units
160
TMUs
8
ROPs
4
Compute Units
2
Z-Stencil
16
L1 Cache
8 KB per CU
L2 Cache
128 KB
Max. TDP
20 W

All TeraScale 2 GPUs

AMD GPU Architecture History

Graphics cards using the AMD Seymour GPU

Name Chip Memory Shaders TMUs ROPs GPU Clock Memory Clock
AMD Radeon HD 6470M Seymour XT 512 MB 160 8 4 700 MHz 800 MHz
AMD Radeon HD 6450M Seymour PRO 1024 MB 160 8 4 600 MHz 800 MHz
AMD Radeon HD 6430M Seymour LP 1024 MB 160 8 4 480 MHz 800 MHz
AMD Radeon HD 7450M Seymour PRO 1024 MB 160 8 4 700 MHz 900 MHz
AMD Radeon HD 7470M Seymour XT 1024 MB 160 8 4 750 MHz 900 MHz
AMD Radeon HD 7490M Seymour XTX 1024 MB 160 8 4 800 MHz 950 MHz
AMD Radeon HD 6490M Seymour XTX 512 MB 160 8 4 800 MHz 800 MHz
AMD Radeon HD 7430M Seymour PRO 1024 MB 160 8 4 600 MHz 800 MHz
AMD FirePro M3900 Seymour GL 1024 MB 160 8 4 750 MHz 900 MHz
AMD Radeon HD 6490M Mac Edition Seymour XTX 256 MB 160 8 4 750 MHz 794 MHz

Seymour GPU Notes

Architecture Codename: Northern Islands
Chip Variant: Caicos
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1