AMD Radeon HD 6850 vs AMD Radeon RX 570X
Graphics Processor
| GPU model | Barts | Polaris 20 |
|---|---|---|
| GPU variant | Barts PRO (215-0798006) | Polaris 20 XL (215-0910052) |
| Architecture | TeraScale 2 | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Manufacturing process | 40 nm | 14 nm |
| Number of transistors | 1,700 million | 5,700 million |
| Die size | 255 mm² | 232 mm² |
Graphics Card
| Release date | Oct 21st, 2010 | Apr 11th, 2018 |
|---|---|---|
| Generation | Northern Islands | Polaris |
| Production | End-of-life | Active |
| Launch price | 179 USD | — |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 105 in our database | — |
| Predecessor | Evergreen | Polaris |
| Successor | Southern Islands | Vega |
Clocks
| GPU clock | 775 MHz | — |
|---|---|---|
| Memory clock | 1000 MHz 4 Gbps effective | 1750 MHz 7 Gbps effective |
| Base clock | — | 1168 MHz |
| Boost clock | — | 1244 MHz |
Memory Configuration
| Memory size | 1024 MB | 8 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 128.0 GB/s | 224.0 GB/s |
Render Configuration
| Shading units | 960 | 2048 |
|---|---|---|
| TMUs | 48 | 128 |
| ROPs | 32 | 32 |
| Compute units | 12 | 32 |
| Cache L1 | 8 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 512 KB | 2 MB |
Performance
| Pixel rate | 24.80 GPixel/s | 39.81 GPixel/s |
|---|---|---|
| Texture rate | 37.20 GTexel/s | 159.2 GTexel/s |
| FP32 (float) performance | 1,488 GFLOPS | 5.095 TFLOPS |
| FP16 (half) performance | — | 5.095 TFLOPS (1:1) |
| FP64 (double) performance | — | 318.5 GFLOPS (1:16) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 198 mm 7.8 inches | 241 mm 9.5 inches |
| TDP | 127 W | 150 W |
| Suggested PSU | 300 W | 450 W |
| Outputs | 2x DVI1x HDMI2x mini-DisplayPort | 1x DVI1x HDMI3x DisplayPort |
| Power connectors | 1x 6-pin | 1x 6-pin |
| Board number | C223 | D000 |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (12_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | — | 1.2 |
| Shader model | 5.0 | 6.4 |
