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AMD Pitcairn

Default
Pitcairn
Pitcairn PRO
Pitcairn PRO
Pitcairn XT
Pitcairn XT
Block Diagram
Block Diagram
CU Diagram
CU Diagram
LDS Diagram
LDS Diagram
AMD's Pitcairn GPU uses the GCN 1.0 architecture and is made using a 28 nm production process at TSMC. With a die size of 212 mm² and a transistor count of 2,800 million it is a medium-sized chip. Pitcairn supports DirectX 12 (Feature Level 11_1). For GPU compute applications, OpenCL version 1.2 can be used. It features 1280 shading units, 80 texture mapping units and 32 ROPs.
Further reading: GCN 1.0 Architecture Whitepaper , Southern Islands Instruction Set Architecture

Graphics Processor

GPU Name
Pitcairn
Architecture
GCN 1.0
Foundry
TSMC
Process Size
28 nm
Transistors
2,800 million
Density
13.2M / mm²
Die Size
212 mm²
Released
Mar 5th, 2012

Graphics Features

DirectX
12 (11_1)
OpenGL
4.6
OpenCL
1.2
Vulkan
1.2
Shader Model
5.1
Compute
GFX6
ROCm
No

Render Config

Shading Units
1280
TMUs
80
ROPs
32
Compute Units
20
Z-Stencil
128
ACEs
2
GEs
2
L1 Cache
16 KB per CU
L2 Cache
512 KB
Max. TDP
175 W

All GCN 1.0 GPUs

AMD GPU Architecture History

Graphics cards using the AMD Pitcairn GPU

Name Chip Memory Shaders TMUs ROPs GPU Clock Memory Clock
AMD Radeon HD 7870 GHz Edition Pitcairn XT 2 GB 1280 80 32 1000 MHz 1200 MHz
AMD FirePro W7000 Pitcairn XT GL 4 GB 1280 80 32 950 MHz 1200 MHz
AMD FirePro W5000 Pitcairn LE GL 2 GB 768 48 32 825 MHz 800 MHz
AMD FirePro S7000 Pitcairn XT GL 4 GB 1280 80 32 950 MHz 1200 MHz
AMD Radeon HD 7850 Pitcairn PRO 2 GB 1024 64 32 860 MHz 1200 MHz
AMD FirePro W4000 Pitcairn LE GL 2 GB 768 48 32 825 MHz 800 MHz
AMD FirePro W5000 DVI Pitcairn LE GL 2 GB 768 48 32 825 MHz 800 MHz
AMD FirePro R5000 Pitcairn LE GL 2 GB 768 48 32 825 MHz 800 MHz
AMD Radeon Sky 500 Pitcairn XT GL 4 GB 1280 80 32 950 MHz 1200 MHz
AMD Radeon HD 8870 OEM Pitcairn XT 2 GB 1280 80 32 1000 MHz 1200 MHz
AMD FirePro D300 Pitcairn XT GL 2 GB 1280 80 32 850 MHz 1270 MHz
AMD Radeon R7 265 Pitcairn PRO 2 GB 1024 64 32 900 MHz 1400 MHz
AMD Radeon R9 270 1024SP Pitcairn PRO 2 GB 1024 64 32 900 MHz 1200 MHz
AMD Radeon R9 M390 Mac Edition Pitcairn PRO 2 GB 1024 64 32 958 MHz 1365 MHz
AMD Radeon R9 M290X Mac Edition Pitcairn PRO 2 GB 1024 64 32 850 MHz 1365 MHz

Pitcairn GPU Notes

Architecture Codename: Southern Islands
CLRX Version: GCN 1.0
Graphics/Compute: GFX6 (gfx601)
Display Core Engine: 6.0
Unified Video Decoder: 4.0
Video Compression Engine: 1.0