AMD Radeon 550X Mobile vs AMD Radeon HD 6870 X2
Graphics Processor
| GPU model | Polaris 23 | Barts |
|---|---|---|
| GPU variant | Polaris 23 MXT | Barts XT (215-0798000) |
| Architecture | GCN 4.0 | TeraScale 2 |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 40 nm |
| Number of transistors | 2,200 million | 1,700 million |
| Die size | 103 mm² | 255 mm² |
Mobile graphics
| Release date | Apr 11th, 2018 | — |
|---|---|---|
| Generation | Mobility Radeon (M500X) | — |
| Production | Active | — |
| Interface | PCIe 3.0 x8 | — |
| Predecessor | Crystal System | — |
Clocks
| Base clock | 1100 MHz | — |
|---|---|---|
| Boost clock | 1287 MHz | — |
| Memory clock | 1500 MHz 6 Gbps effective | 1050 MHz 4.2 Gbps effective |
| GPU clock | — | 900 MHz |
Memory Configuration
| Memory size | 4 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 64 bit | 256 bit |
| Bandwidth | 48.00 GB/s | 134.4 GB/s |
Render Configuration
| Shading units | 640 | 1120 |
|---|---|---|
| TMUs | 40 | 56 |
| ROPs | 16 | 32 |
| Compute units | 10 | 14 |
| Cache L1 | 16 KB (per CU) | 8 KB (per CU) |
| Cache L2 | 256 KB | 512 KB |
Performance
| Pixel rate | 20.59 GPixel/s | 28.80 GPixel/s |
|---|---|---|
| Texture rate | 51.48 GTexel/s | 50.40 GTexel/s |
| FP16 (half) performance | 1.647 TFLOPS (1:1) | — |
| FP32 (float) performance | 1.647 TFLOPS | 2.016 TFLOPS |
| FP64 (double) performance | 103.0 GFLOPS (1:16) | — |
Dimensions & Outputs
| Slot width | IGP | Dual-slot |
|---|---|---|
| TDP | 50 W | 300 W |
| Outputs | No outputs | 2x DVI1x HDMI2x mini-DisplayPort |
| Power connectors | None | — |
| Length | — | 304 mm 12 inches |
| Suggested PSU | — | 700 W |
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 |
Other Features
Graphics Card
| Release date | — | Jul 8th, 2011 |
|---|---|---|
| Generation | — | Northern Islands |
| Production | — | End-of-life |
| Launch price | — | 520 USD |
| Interface | — | PCIe 2.0 x16 |
| Reviews | — | 170 in our database |
| Predecessor | — | Evergreen |
| Successor | — | Southern Islands |
