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AMD Heathrow

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Heathrow
Block Diagram
Block Diagram
CU Diagram
CU Diagram
LDS Diagram
LDS Diagram
AMD's Heathrow GPU uses the GCN 1.0 architecture and is made using a 28 nm production process at TSMC. With a die size of 123 mm² and a transistor count of 1,500 million it is a small chip. Heathrow supports DirectX 12 (Feature Level 11_1). For GPU compute applications, OpenCL version 2.1 (1.2) can be used. It features 640 shading units, 40 texture mapping units and 16 ROPs.
Further reading: GCN 1.0 Architecture Whitepaper , Southern Islands Instruction Set Architecture

Graphics Processor

Released
Apr 24th, 2012
GPU Name
Heathrow
Desktop Variant
Cape Verde
Mobile Variant
Chelsea
Mobile Variant 2
Venus / Tropo
Generation
Southern Islands
Architecture
GCN 1.0
Foundry
TSMC
Process Size
28 nm
Transistors
1,500 million
Density
12.2M / mm²
Die Size
123 mm²
Package
FCBGA-962

Graphics Features

DirectX
12 (11_1)
OpenGL
4.6
OpenCL
2.1 (1.2)
Vulkan
1.2.170
Shader Model
6.5 (5.1)
WDDM
2.7
Compute
GFX6 (gfx601)
DCE
6.0
UVD
4.0
VCE
1.0
CLRX
GCN 1.0.0

Render Config

Shading Units
640
TMUs
40
ROPs
16
Compute Units
10
Z-Stencil
64
ACEs
2
GEs
1
L1 Cache
16 KB per CU
L2 Cache
256 KB
Max. TDP
45 W

All GCN 1.0 GPUs

AMD GPU Architecture History

Graphics cards using the AMD Heathrow GPU

Name Chip Memory Shaders TMUs ROPs GPU Clock Memory Clock
AMD Radeon HD 7850M
Heathrow PRO 2 GB 640 40 16 675 MHz 1000 MHz
AMD Radeon HD 7870M
Heathrow XT 2 GB 640 40 16 800 MHz 1000 MHz
AMD FirePro M6000
Heathrow XT GL 2 GB 640 40 16 800 MHz 1000 MHz

Heathrow GPU Notes

Generation: Southern Islands
Desktop Variant: Cape Verde
Mobile Variant: Chelsea / Venus / Tropo
Graphics/Compute: GFX6 (gfx601)
Display Core Engine: 6.0
Unified Video Decoder: 4.0
Video Compression Engine: 1.0
CLRX: GCN 1.0
Apr 25th, 2024 09:22 EDT change timezone

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