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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). 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

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