AMD Radeon 550X 640SP vs AMD Radeon RX 550X 640SP
What is the difference between AMD Radeon 550X 640SP and AMD Radeon RX 550X 640SP. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Lexa | GPU Name | Baffin |
| Lexa PRO (215-0904018) | Model number | Baffin LE |
| GCN 4.0 | Architecture | GCN 4.0 |
| GlobalFoundries | Foundry | GlobalFoundries |
| 14 nm | Process Size | 14 nm |
| 2,200 million | Transistors | 3,000 million |
| 103 mm² | Die Size | 123 mm² |
Graphics Card
| Apr 11th, 2018 | Release Date | Apr 11th, 2018 |
| Polaris (RX 500X) | Family | Polaris (RX 500X) |
| Active | Production | Active |
| Polaris | Predecessor | Polaris |
| PCIe 3.0 x8 | Bus Interface | PCIe 3.0 x8 |
Memory
| 4 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 64 bit | Memory Bus | 128 bit |
| 48.00 GB/s | Bandwidth | 96.00 GB/s |
Performance
| 17.14 GPixel/s | Pixel fillrate | 17.14 GPixel/s |
| 42.84 GTexel/s | Texture fillrate | 42.84 GTexel/s |
| 1,371 GFLOPS (1:1) | FP16 (half) performance | 1,371 GFLOPS (1:1) |
| 1,371 GFLOPS | FP32 (float) performance | 1,371 GFLOPS |
| 85.68 GFLOPS (1:16) | FP64 (double) performance | 85.68 GFLOPS (1:16) |
Clock Speeds
| 1019 MHz | Base Clock | 1019 MHz |
| 1071 MHz | Boost Clock | 1071 MHz |
| 1500 MHz 6 Gbps effective | Memory Clock | 1500 MHz 6 Gbps effective |
Render Config
| 640 | Shading Units | 640 |
| 40 | TMUs | 40 |
| 16 | ROPs | 16 |
| 10 | Compute Units | 10 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 1024 KB |
Board Design
| IGP | Slot Width | Dual-slot |
| 50 W | Thermal design power (TDP) | 60 W |
| 250 W | Suggested PSU | 250 W |
| 1x DVI 1x HDMI 1x DisplayPort | Display Connectors | 1x DVI 1x HDMI 1x DisplayPort |
| None | Power Connectors | None |
API support
| 12 (12_0) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 2.1 | OpenCL | 2.1 |
| 1.2 | Vulkan | 1.2 |
| 6.4 | Shader Model | 6.4 |