AMD Topaz
Topaz
Topaz PRO
Topaz XT
AMD's Topaz GPU uses the GCN 3.0 architecture and is made using a 28 nm production process at TSMC. With a die size of 125 mm² and a transistor count of 1,550 million it is a small chip. Topaz supports DirectX 12 (Feature Level 12_0). For GPU compute applications, OpenCL version 2.0 can be used. It features 384 shading units, 24 texture mapping units and 8 ROPs.
Further reading:
GCN 3.0 Instruction Set Architecture 
Graphics Processor
- GPU Name
- Topaz
- Architecture
- GCN 3.0
- Foundry
- TSMC
- Process Size
- 28 nm
- Transistors
- 1,550 million
- Density
- 12.4M / mm²
- Die Size
- 125 mm²
- Released
- 2014
Graphics Features
- DirectX
- 12 (12_0)
- OpenGL
- 4.6
- OpenCL
- 2.0
- Vulkan
- 1.2
- Shader Model
- 6.3
- Compute
- GFX8
- ROCm
- No
Render Config
- Shading Units
- 384
- TMUs
- 24
- ROPs
- 8
- Compute Units
- 6
- L1 Cache
- 16 KB per CU
- L2 Cache
- 256 KB
All GCN 3.0 GPUs
AMD GPU Architecture History
Graphics cards using the AMD Topaz GPU
| Name | Chip | Memory | Shaders | TMUs | ROPs | Base Clock | Boost Clock | Memory Clock |
|---|---|---|---|---|---|---|---|---|
| AMD Radeon R7 M265 | Topaz XT | 2 GB | 384 | 24 | 8 | 900 MHz | 980 MHz | 900 MHz |
| AMD Radeon R5 M255 | Topaz PRO | 1024 MB | 384 | 24 | 8 | 925 MHz | 940 MHz | 1000 MHz |
| AMD Radeon R7 M260 | Topaz XT | 2 GB | 384 | 24 | 8 | 940 MHz | 980 MHz | 900 MHz |
| AMD Radeon R7 M270DX | Topaz XT | System Shared | 384 | 24 | 8 | 900 MHz | 980 MHz | System Shared |
| AMD Radeon R7 M265DX | Topaz XT | System Shared | 384 | 24 | 8 | 900 MHz | 980 MHz | System Shared |
| AMD Radeon R6 M255DX | Topaz PRO | System Shared | 384 | 24 | 8 | 925 MHz | 940 MHz | System Shared |
| AMD Radeon R7 M260DX | Topaz PRO | System Shared | 384 | 24 | 8 | 925 MHz | 940 MHz | System Shared |
| AMD Radeon R7 M265DX | Topaz PRO | System Shared | 384 | 24 | 8 | 925 MHz | 940 MHz | System Shared |
| AMD Radeon R7 A260 | Topaz XT | 1024 MB | 384 | 24 | 8 | 900 MHz | 980 MHz | 900 MHz |
| AMD Radeon R5 A255 | Topaz PRO | 1024 MB | 384 | 24 | 8 | 925 MHz | 940 MHz | 1000 MHz |
| AMD Radeon R7 M465 | Topaz XT | 2 GB | 384 | 24 | 8 | 1100 MHz | 1125 MHz | 900 MHz |
Topaz GPU Notes
| Architecture Codename: Volcanic Islands Chip Variant: Iceland CLRX Version: GCN 1.2 Graphics/Compute: GFX8 (gfx802) Display Core Engine: No Support Unified Video Decoder: No Support Video Compression Engine: No Support |