Product Compare
NVIDIA GeForce GTX 870M vs AMD Radeon HD 6870 X2
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2014 | Jul 2011 |
| Generation | GeForce 800M | Northern Islands |
| Type | Mobile | Desktop |
| Bus Interface | MXM-B (3.0) | PCIe 2.0 x16 |
| Clock Speeds | ||
| Base Clock | 941 MHz | |
| Boost Clock | 967 MHz | |
| Memory Clock | 1250 MHz | 1050 MHz |
| Memory | ||
| Memory Size | 3GB | 1024MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 192bit | 256bit |
| Bandwidth | 120.0GB/s | 134.4GB/s |
| Render Config | ||
| Shading Units | 1344 | 1120 |
| TMUs | 112 | 56 |
| ROPs | 24 | 32 |
| L1 Cache | 16 KB (per SMX) | 8 KB (per CU) |
| L2 Cache | 384 KB | 512 KB |
| Compute Units | 14 | |
| Theoretical Performance | ||
| Pixel Rate | 27.08 GPixel/s | 28.80 GPixel/s |
| Texture Rate | 108.3 GTexel/s | 50.40 GTexel/s |
| FP32 (float) | 2.599 TFLOPS | 2.016 TFLOPS |
| FP64 (double) | 108.3 GFLOPS | |
| Graphics Processor | ||
| GPU Name | GK104 | Barts |
| GPU Variant | N15E-GT-A2 | Barts XT(215-0798000) |
| Architecture | Kepler | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 40 nm |
| Transistors | 3.54 billion | 1.7 billion |
| Die Size | 294 mm² | 255 mm² |
| Board Design | ||
| TDP | 100W | 300W |
| Outputs | No outputs | 2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1 |
| Power Connectors | None | |
| Suggested PSU | 700 W | |
| Graphics Features | ||
| DirectX | 12 (11_0) | 11.2 (11_0) |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 3.0 | 1.2 |
| Vulkan | 1.1 | N/A |
| CUDA | 3.0 | |
| Shader Model | 5.1 | 5.0 |