AMD Neptune
Neptune
Block Diagram
CU Diagram
LDS Diagram
AMD's Neptune 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. Neptune supports DirectX 12 (Feature Level 11_1). It features 1280 shading units, 80 texture mapping units and 32 ROPs.
Further reading:
GCN 1.0 Architecture Whitepaper 
, Southern Islands Instruction Set Architecture
, Southern Islands Instruction Set Architecture Graphics Processor
- GPU Name
- Neptune
- Architecture
- GCN 1.0
- Foundry
- TSMC
- Process Size
- 28 nm
- Transistors
- 2,800 million
- Density
- 13.2M / mm²
- Die Size
- 212 mm²
- Released
- May 14th, 2013
Graphics Features
- DirectX
- 12 (11_1)
- OpenGL
- 4.6
- OpenCL
- 1.2
- Vulkan
- 1.2.131
- 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
- 100 W
All GCN 1.0 GPUs
AMD GPU Architecture History
Graphics cards using the AMD Neptune GPU
| Name | Chip | Memory | Shaders | TMUs | ROPs | Base Clock | Boost Clock | Memory Clock |
|---|---|---|---|---|---|---|---|---|
AMD Radeon HD 8970M
|
Neptune XT | 4 GB | 1280 | 80 | 32 | 850 MHz | 900 MHz | 1200 MHz |
AMD Radeon R9 M290X
|
Neptune XT | 4 GB | 1280 | 80 | 32 | 850 MHz | 900 MHz | 1200 MHz |
Neptune GPU Notes
| Architecture Codename: Southern Islands Chip Variant: Pitcairn CLRX Version: GCN 1.0 Graphics/Compute: GFX6 (gfx601) Display Core Engine: 6.0 Unified Video Decoder: 4.0 Video Compression Engine: 1.0 |