AMD Radeon RX 455 OEM vs AMD Radeon RX 560X Mobile
Graphics Processor
| GPU model | Tobago | Polaris 21 |
|---|---|---|
| GPU variant | Tobago PRO (215-0875010) | Polaris 21M XT |
| Architecture | GCN 2.0 | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Manufacturing process | 28 nm | 14 nm |
| Number of transistors | 2,080 million | 3,000 million |
| Die size | 160 mm² | 123 mm² |
Graphics Card
| Release date | Jun 30th, 2016 | — |
|---|---|---|
| Generation | Arctic Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Predecessor | Pirate Islands | — |
| Successor | Polaris | — |
Clocks
| GPU clock | 1050 MHz | 1275 MHz |
|---|---|---|
| Memory clock | 1625 MHz 6.5 Gbps effective | 1450 MHz 5.8 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 4 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 104.0 GB/s | 92.80 GB/s |
Render Configuration
| Shading units | 768 | 1024 |
|---|---|---|
| TMUs | 48 | 64 |
| ROPs | 16 | 16 |
| Compute units | 12 | 16 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 1024 KB |
Performance
| Pixel rate | 16.80 GPixel/s | 20.40 GPixel/s |
|---|---|---|
| Texture rate | 50.40 GTexel/s | 81.60 GTexel/s |
| FP32 (float) performance | 1.613 TFLOPS | 2.611 TFLOPS |
| FP64 (double) performance | 100.8 GFLOPS (1:16) | 163.2 GFLOPS (1:16) |
| FP16 (half) performance | — | 2.611 TFLOPS (1:1) |
Dimensions & Outputs
| Slot width | Single-slot | MXM Module |
|---|---|---|
| Length | 165 mm 6.5 inches | — |
| TDP | 100 W | 65 W |
| Suggested PSU | 300 W | — |
| Outputs | 1x DVI1x HDMI1x DisplayPort | No outputs |
| Power connectors | 1x 6-pin | None |
| Board number | C582, C936 | — |
API Support & Features
| DirectX | 12 (12_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.0 | 2.1 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 6.3 | 6.4 |
Other Features
Mobile graphics
| Release date | — | Apr 11th, 2018 |
|---|---|---|
| Generation | — | Mobility Radeon (RX M500X) |
| Production | — | Active |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | Crystal System |
