AMD Tonga Graphics Processing Unit (GPU)
Architecture
AMD Graphics Core Next 3.0 28nm
Most Powerful Variant
Tonga XT
Cores : TMUs : ROPs
2048 : 128 : 32
Typical Memory Size
3072 MB
Typical Memory Bus
384 -bit
AMD Tonga
Overview
Manufacturer
AMD
Series
Radeon 200
Release Date
Oct 2014
Board Model
AMD C765
Graphics Processing Unit
GPU Model
Tonga XT (Tonga)
Architecture
Graphics Core Next 3.0
Fabrication Process
28 nm
Die Size
359 mm2
Transistors Count
5B
Stream Processors
2048
TMUs
128
ROPs
32
Clocks
Base Clock
1002 MHz
Memory Clock
1375 MHz
Effective Memory Clock
5500 Mbps
Memory Configuration
Memory Size
3072 MB
Memory Type
GDDR5
Memory Bus Width
384-bit
Memory Bandwidth
264 GB/s
Physical
Interface
PCI-Express 3.0 x16
Power Connectors
-
Display Outputs
DVI-I DualLink
2 ×
DisplayPort
1 ×
HDMI
1 ×
API Support
DirectX
11.2
Mantle
1.0
Vulkan
1.0
OpenGL
4.4
OpenCL
2.0
Shader Model
5.0
Performance
Pixel Fillrate
32.1 GPixels/s
Texture Fillrate
128.3 GTexel/s
SPFP Performance
4.1 TFLOPS
Performance per mm2
11.4 GFLOPS/mm2
| Model | GPU | Clocks | Memory | |
|---|---|---|---|---|
 | AMD Radeon R9 285X | Tonga XT | 1002 / 1375 MHz | 3 GB GDDR5 |
 | AMD Radeon R9 380X | Antigua XT | 970 / 1425 MHz | 4 GB GDDR5 |
 | AMD Radeon R9 M390X | Amethyst XT | 723 / 1250 MHz | 4 GB GDDR5 |
| | AMD Radeon R9 M395 | Amethyst XT | 834 / 1365 MHz | 4 GB GDDR5 |
| | AMD Radeon R9 M395X | Amethyst XT | 723 / 1250 MHz | 4 GB GDDR5 |
| | AMD Radeon R9 M485X | Tonga | 1000 / 1250 MHz | 8 GB GDDR5 |
 | AMD Radeon R9 285 | Tonga PRO | 918 / 1375 MHz | 2 GB GDDR5 |
| | AMD Radeon R9 380 | Antigua PRO | 970 / 1375 MHz | 2 GB GDDR5 |