AMD Radeon RX 550 640SP vs AMD Radeon RX 580
Graphics Processor
| GPU model | Baffin | Polaris 20 |
|---|---|---|
| GPU variant | Baffin LE | Polaris 20 XTX (215-0910038) |
| Architecture | GCN 4.0 | GCN 4.0 |
| Foundry | GlobalFoundries | GlobalFoundries |
| Manufacturing process | 14 nm | 14 nm |
| Number of transistors | 3,000 million | 5,700 million |
| Die size | 123 mm² | 232 mm² |
Graphics Card
| Release date | Oct 13th, 2017 | Apr 18th, 2017 |
|---|---|---|
| Generation | Polaris | Polaris |
| Production | Active | Active |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Predecessor | Arctic Islands | Arctic Islands |
| Successor | Vega | Vega |
| Launch price | — | 229 USD |
| Current price | — | Amazon / Newegg |
| Reviews | — | 52 in our database |
Clocks
| Base clock | 1019 MHz | 1257 MHz |
|---|---|---|
| Boost clock | 1071 MHz | 1340 MHz |
| Memory clock | 1500 MHz 6 Gbps effective | 2000 MHz 8 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 8 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 96.00 GB/s | 256.0 GB/s |
Render Configuration
| Shading units | 640 | 2304 |
|---|---|---|
| TMUs | 40 | 144 |
| ROPs | 16 | 32 |
| Compute units | 10 | 36 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 1024 KB | 2 MB |
Performance
| Pixel rate | 17.14 GPixel/s | 42.88 GPixel/s |
|---|---|---|
| Texture rate | 42.84 GTexel/s | 193.0 GTexel/s |
| FP16 (half) performance | 1,371 GFLOPS (1:1) | 6.175 TFLOPS (1:1) |
| FP32 (float) performance | 1,371 GFLOPS | 6.175 TFLOPS |
| FP64 (double) performance | 85.68 GFLOPS (1:16) | 385.9 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 145 mm 5.7 inches | 241 mm 9.5 inches |
| TDP | 60 W | 185 W |
| Suggested PSU | 250 W | 450 W |
| Outputs | 1x DVI1x HDMI1x DisplayPort | 1x HDMI3x DisplayPort |
| Power connectors | None | 1x 8-pin |
| Board number | D090-21 | C940, D009-04 |
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 |
