AMD Radeon RX 550 vs ATI Radeon X1950 XT
Graphics Processor
| GPU model | Lexa | R580+ |
|---|---|---|
| GPU variant | Lexa PRO (215-0904018) | R580+ XT (215BAABKA31FG) |
| Architecture | GCN 4.0 | R500 |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 90 nm |
| Number of transistors | 2,200 million | 384 million |
| Die size | 103 mm² | 352 mm² |
Graphics Card
| Release date | Apr 20th, 2017 | Oct 17th, 2006 |
|---|---|---|
| Generation | Polaris | Radeon R500 PCIe |
| Production | End-of-life | End-of-life |
| Launch price | 79 USD | — |
| Interface | PCIe 3.0 x8 | PCIe 1.0 x16 |
| Predecessor | Arctic Islands | Radeon R400 PCIe |
| Successor | Vega | Radeon R600 |
| Reviews | — | 144 in our database |
Clocks
| Base clock | 1100 MHz | — |
|---|---|---|
| Boost clock | 1183 MHz | — |
| Memory clock | 1750 MHz 7 Gbps effective | 900 MHz 1800 Mbps effective |
| GPU clock | — | 625 MHz |
Memory Configuration
| Memory size | 2 GB | 256 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 112.0 GB/s | 57.60 GB/s |
Render Configuration
| Shading units | 512 | — |
|---|---|---|
| TMUs | 32 | 16 |
| ROPs | 16 | 16 |
| Compute units | 8 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 512 KB | — |
| Pixel shaders | — | 48 |
| Vertex shaders | — | 8 |
Performance
| Pixel rate | 18.93 GPixel/s | 10.00 GPixel/s |
|---|---|---|
| Texture rate | 37.86 GTexel/s | 10.00 GTexel/s |
| FP16 (half) performance | 1,211 GFLOPS (1:1) | — |
| FP32 (float) performance | 1,211 GFLOPS | — |
| FP64 (double) performance | 75.71 GFLOPS (1:16) | — |
| Vertex rate | — | 1.250 GVertices/s |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 145 mm 5.7 inches | — |
| TDP | 50 W | 96 W |
| Suggested PSU | 250 W | 250 W |
| Outputs | 1x DVI1x HDMI1x DisplayPort | 2x DVI1x S-Video |
| Power connectors | None | 1x 6-pin |
| Board number | D090-01 | — |
API Support & Features
| DirectX | 12 (12_0) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 4.6 | 2.1 (full) 3.0 (partial) |
| OpenCL | 2.1 | — |
| Vulkan | 1.2 | — |
| Shader model | 6.4 | 3.0 |
