AMD Radeon RX 640 Mobile vs NVIDIA GeForce 945M
Graphics Processor
| GPU model | Polaris 23 | GM107 |
|---|---|---|
| GPU variant | Polaris 23 XT | — |
| Architecture | GCN 4.0 | Maxwell |
| Foundry | GlobalFoundries | TSMC |
| Manufacturing process | 14 nm | 28 nm |
| Number of transistors | 2,200 million | 1,870 million |
| Die size | 103 mm² | 148 mm² |
Mobile graphics
| Release date | May 13th, 2019 | Oct 27th, 2015 |
|---|---|---|
| Generation | Mobility Radeon (M600) | GeForce 900M |
| Production | Active | End-of-life |
| Interface | PCIe 3.0 x8 | MXM-B (3.0) |
| Predecessor | Crystal System | GeForce 800M |
| Successor | — | GeForce 10 Mobile |
Clocks
| Base clock | 1082 MHz | 928 MHz |
|---|---|---|
| Boost clock | 1218 MHz | 1020 MHz |
| Memory clock | 1500 MHz 6 Gbps effective | 900 MHz 1800 Mbps effective |
Memory Configuration
| Memory size | 2 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | DDR3 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 48.00 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 640 | 640 |
|---|---|---|
| TMUs | 40 | 40 |
| ROPs | 16 | 16 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SMM) |
| Cache L2 | 512 KB | 2 MB |
| SMM count | — | 5 |
Performance
| Pixel rate | 19.49 GPixel/s | 16.32 GPixel/s |
|---|---|---|
| Texture rate | 48.72 GTexel/s | 40.80 GTexel/s |
| FP16 (half) performance | 1.559 TFLOPS (1:1) | — |
| FP32 (float) performance | 1.559 TFLOPS | 1,306 GFLOPS |
| FP64 (double) performance | 97.44 GFLOPS (1:16) | 40.80 GFLOPS (1:32) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| TDP | 50 W | 75 W |
| Outputs | No outputs | No outputs |
| Power connectors | None | — |
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 | — | 5.0 |
