AMD Radeon RX 550 vs ATI Radeon HD 5850
Graphics Processor
| GPU model | Lexa | Cypress |
|---|---|---|
| GPU variant | Lexa PRO (215-0904018) | Cypress PRO (215-0735043) |
| Architecture | GCN 4.0 | TeraScale 2 |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 40 nm |
| Number of transistors | 2,200 million | 2,154 million |
| Die size | 103 mm² | 334 mm² |
Graphics Card
| Release date | Apr 20th, 2017 | Sep 30th, 2009 |
|---|---|---|
| Generation | Polaris | Evergreen |
| Production | End-of-life | End-of-life |
| Launch price | 79 USD | 299 USD |
| Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |
| Predecessor | Arctic Islands | Radeon R700 |
| Successor | Vega | Northern Islands |
| Reviews | — | 101 in our database |
Clocks
| Base clock | 1100 MHz | — |
|---|---|---|
| Boost clock | 1183 MHz | — |
| Memory clock | 1750 MHz 7 Gbps effective | 1000 MHz 4 Gbps effective |
| GPU clock | — | 725 MHz |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 112.0 GB/s | 128.0 GB/s |
Render Configuration
| Shading units | 512 | 1440 |
|---|---|---|
| TMUs | 32 | 72 |
| ROPs | 16 | 32 |
| Compute units | 8 | 18 |
| Cache L1 | 16 KB (per CU) | 8 KB (per CU) |
| Cache L2 | 512 KB | 512 KB |
Performance
| Pixel rate | 18.93 GPixel/s | 23.20 GPixel/s |
|---|---|---|
| Texture rate | 37.86 GTexel/s | 52.20 GTexel/s |
| FP16 (half) performance | 1,211 GFLOPS (1:1) | — |
| FP32 (float) performance | 1,211 GFLOPS | 2.088 TFLOPS |
| FP64 (double) performance | 75.71 GFLOPS (1:16) | 417.6 GFLOPS (1:5) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 145 mm 5.7 inches | 241 mm 9.5 inches |
| TDP | 50 W | 151 W |
| Suggested PSU | 250 W | 450 W |
| Outputs | 1x DVI1x HDMI1x DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | None | 2x 6-pin |
| Board number | D090-01 | C002-37 |
API Support & Features
| DirectX | 12 (12_0) | 11.2 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.4 |
| OpenCL | 2.1 | 1.2 |
| Vulkan | 1.2 | — |
| Shader model | 6.4 | 5.0 |
