AMD Radeon Pro 455 vs AMD Radeon Pro 555
Graphics Processor
| GPU model | Baffin | Polaris 21 |
|---|---|---|
| GPU variant | Baffin PRO | Polaris 21 PRO |
| Architecture | GCN 4.0 | GCN 4.0 |
| Foundry | GlobalFoundries | GlobalFoundries |
| Manufacturing process | 14 nm | 14 nm |
| Number of transistors | 3,000 million | 3,000 million |
| Die size | 123 mm² | 123 mm² |
Mobile graphics
| Release date | Oct 30th, 2016 | Jun 5th, 2017 |
|---|---|---|
| Generation | Radeon Pro Mac (400 Series) | Radeon Pro Mac (500 Series) |
| Production | Active | Active |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x8 |
Clocks
| GPU clock | 855 MHz | 850 MHz |
|---|---|---|
| Memory clock | 1270 MHz 5.1 Gbps effective | 1275 MHz 5.1 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 81.28 GB/s | 81.60 GB/s |
Render Configuration
| Shading units | 768 | 768 |
|---|---|---|
| TMUs | 48 | 48 |
| ROPs | 16 | 16 |
| Compute units | 12 | 12 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 1024 KB | 1024 KB |
Performance
| Pixel rate | 13.68 GPixel/s | 13.60 GPixel/s |
|---|---|---|
| Texture rate | 41.04 GTexel/s | 40.80 GTexel/s |
| FP16 (half) performance | 1,313 GFLOPS (1:1) | 1,306 GFLOPS (1:1) |
| FP32 (float) performance | 1,313 GFLOPS | 1,306 GFLOPS |
| FP64 (double) performance | 82.08 GFLOPS (1:16) | 81.60 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | MXM Module | IGP |
|---|---|---|
| TDP | 35 W | 75 W |
| Outputs | No outputs | No outputs |
| Power connectors | None | None |
API Support & Features
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.4 | 6.4 |
