Product Compare
NVIDIA GeForce GTX 870M vs AMD Radeon RX 640 Mobile
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2014 | May 2019 |
| Generation | GeForce 800M | Mobility Radeon |
| Type | Mobile | Mobile |
| Bus Interface | MXM-B (3.0) | PCIe 3.0 x8 |
| Clock Speeds | ||
| Base Clock | 941 MHz | 1082 MHz |
| Boost Clock | 967 MHz | 1218 MHz |
| Memory Clock | 1250 MHz | 1500 MHz |
| Memory | ||
| Memory Size | 3GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 192bit | 64bit |
| Bandwidth | 120.0GB/s | 48.00GB/s |
| Render Config | ||
| Shading Units | 1344 | 640 |
| TMUs | 112 | 40 |
| ROPs | 24 | 16 |
| L1 Cache | 16 KB (per SMX) | 16 KB (per CU) |
| L2 Cache | 384 KB | 512 KB |
| Compute Units | 10 | |
| Theoretical Performance | ||
| Pixel Rate | 27.08 GPixel/s | 19.49 GPixel/s |
| Texture Rate | 108.3 GTexel/s | 48.72 GTexel/s |
| FP32 (float) | 2.599 TFLOPS | 1.559 TFLOPS |
| FP64 (double) | 108.3 GFLOPS | 97.44 GFLOPS |
| FP16 (half) | 1.559 TFLOPS | |
| Graphics Processor | ||
| GPU Name | GK104 | Polaris 23 |
| GPU Variant | N15E-GT-A2 | Polaris 23 XT |
| Architecture | Kepler | GCN 4.0 |
| Foundry | TSMC | GlobalFoundries |
| Process Size | 28 nm | 14 nm |
| Transistors | 3.54 billion | 2.2 billion |
| Die Size | 294 mm² | 103 mm² |
| Board Design | ||
| TDP | 100W | 50W |
| Outputs | No outputs | No outputs |
| Power Connectors | None | None |
| Graphics Features | ||
| DirectX | 12 (11_0) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 2.1 |
| Vulkan | 1.1 | 1.2 |
| CUDA | 3.0 | |
| Shader Model | 5.1 | 6.4 |