AMD Radeon Pro 555X
- Graphics Processor
- Polaris 21
- Cores
- 768
- TMUs
- 48
- ROPs
- 16
- Memory Size
- 4 GB
- Memory Type
- GDDR5
- Bus Width
- 128 bit
Recommended Gaming Resolutions:
- 640x480
- 1280x720
- 1366x768
- 1600x900
- 1920x1080
- 2560x1440
- 3840x2160
The Radeon Pro 555X is a professional mobile graphics chip by AMD, launched in July 2018. Built on the 14 nm process, and based on the Polaris 21 graphics processor, in its Polaris 21 PRO variant, the chip supports DirectX 12. The Polaris 21 graphics processor is an average sized chip with a die area of 123 mm² and 3,000 million transistors. Unlike the fully unlocked Radeon RX 560X, which uses the same GPU but has all 1024 shaders enabled, AMD has disabled some shading units on the Radeon Pro 555X to reach the product's target shader count. It features 768 shading units, 48 texture mapping units, and 16 ROPs. AMD has paired 4 GB GDDR5 memory with the Radeon Pro 555X, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 907 MHz, memory is running at 1470 MHz (5.9 Gbps effective).
Its power draw is rated at 75 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. Radeon Pro 555X is connected to the rest of the system using a PCI-Express 3.0 x8 interface.
Its power draw is rated at 75 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device. Radeon Pro 555X is connected to the rest of the system using a PCI-Express 3.0 x8 interface.
Graphics Processor
- GPU Name
- Polaris 21
- GPU Variant
- Polaris 21 PRO
- Architecture
- GCN 4.0
- Foundry
- GlobalFoundries
- Process Size
- 14 nm
- Transistors
- 3,000 million
- Die Size
- 123 mm²
Mobile Graphics
- Release Date
- Jul 16th, 2018
- Generation
-
Radeon Pro Mac
(500X Series)
- Production
- Active
- Bus Interface
- PCIe 3.0 x8
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
- GPU Clock
- 907 MHz
- Memory Clock
-
1470 MHz
5.9 Gbps effective
Memory
- Memory Size
- 4 GB
- Memory Type
- GDDR5
- Memory Bus
- 128 bit
- Bandwidth
- 94.08 GB/s
Render Config
- Shading Units
- 768
- TMUs
- 48
- ROPs
- 16
- Compute Units
- 12
- L1 Cache
- 16 KB (per CU)
- L2 Cache
- 1024 KB
Theoretical Performance
- Pixel Rate
- 14.51 GPixel/s
- Texture Rate
- 43.54 GTexel/s
- FP16 (half) performance
- 1,393 GFLOPS (1:1)
- FP32 (float) performance
- 1,393 GFLOPS
- FP64 (double) performance
- 87.07 GFLOPS (1:16)
Board Design
- Slot Width
- IGP
- TDP
- 75 W
- Outputs
- No outputs
- Power Connectors
- None
Graphics Features
- DirectX
- 12 (12_0)
- OpenGL
- 4.6
- OpenCL
- 2.1
- Vulkan
- 1.2
- Shader Model
- 6.4
Polaris 21 GPU Notes
| Architecture Codename: Arctic Islands Codename: Baffin CLRX Version: GCN 1.2 Graphics/Compute: GFX8 (gfx803) Display Core Engine: 11.2 Unified Video Decoder: 6.3 Video Compression Engine: 3.4 |