AMD Radeon RX 570X vs NVIDIA GeForce GTX 645 OEM
Graphics Processor
| GPU model | Polaris 20 | GK106 |
|---|---|---|
| GPU variant | Polaris 20 XL (215-0910052) | GK106-200-A1 |
| Architecture | GCN 4.0 | Kepler |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 28 nm |
| Number of transistors | 5,700 million | 2,540 million |
| Die size | 232 mm² | 221 mm² |
Graphics Card
| Release date | Apr 11th, 2018 | Apr 22nd, 2013 |
|---|---|---|
| Generation | Polaris | GeForce 600 |
| Production | Active | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Predecessor | Polaris | GeForce 500 |
| Successor | Vega | GeForce 700 |
Clocks
| Base clock | 1168 MHz | — |
|---|---|---|
| Boost clock | 1244 MHz | — |
| Memory clock | 1750 MHz 7 Gbps effective | 1000 MHz 4 Gbps effective |
| GPU clock | — | 824 MHz |
Memory Configuration
| Memory size | 8 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 128 bit |
| Bandwidth | 224.0 GB/s | 64.00 GB/s |
Render Configuration
| Shading units | 2048 | 576 |
|---|---|---|
| TMUs | 128 | 48 |
| ROPs | 32 | 16 |
| Compute units | 32 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 2 MB | 256 KB |
| SMX count | — | 3 |
Performance
| Pixel rate | 39.81 GPixel/s | 9.888 GPixel/s |
|---|---|---|
| Texture rate | 159.2 GTexel/s | 39.55 GTexel/s |
| FP16 (half) performance | 5.095 TFLOPS (1:1) | — |
| FP32 (float) performance | 5.095 TFLOPS | 949.2 GFLOPS |
| FP64 (double) performance | 318.5 GFLOPS (1:16) | 39.55 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | Single-slot |
|---|---|---|
| Length | 241 mm 9.5 inches | 147 mm 5.8 inches |
| TDP | 150 W | 65 W |
| Suggested PSU | 450 W | 250 W |
| Outputs | 1x DVI1x HDMI3x DisplayPort | 1x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 6-pin | None |
| Board number | D000 | P2010 SKU 20 |
API Support & Features
| DirectX | 12 (12_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 6.4 | 5.1 |
| CUDA | — | 3.0 |
