NVIDIA GeForce 840A vs NVIDIA GeForce 840M
What is the difference between NVIDIA GeForce 840A and NVIDIA GeForce 840M. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GM108 | GPU Name | GM108 |
| Maxwell | Architecture | Maxwell |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| unknown | Transistors | unknown |
| unknown | Die Size | unknown |
Graphics Card
| Mar 17th, 2014 | Release Date | Mar 12th, 2014 |
| GeForce 800A | Family | GeForce 800M |
| End-of-life | Production | End-of-life |
| GeForce 700A | Predecessor | GeForce 700M |
| PCIe 3.0 x8 | Bus Interface | PCIe 3.0 x8 |
Memory
| 2 GB | Memory Size | 2 GB |
| DDR3 | Memory Type | DDR3 |
| 64 bit | Memory Bus | 64 bit |
| 16.02 GB/s | Bandwidth | 16.02 GB/s |
Performance
| 8.992 GPixel/s | Pixel fillrate | 8.992 GPixel/s |
| 17.98 GTexel/s | Texture fillrate | 17.98 GTexel/s |
| 863.2 GFLOPS | FP32 (float) performance | 863.2 GFLOPS |
| 26.98 GFLOPS (1:32) | FP64 (double) performance | 26.98 GFLOPS (1:32) |
Clock Speeds
| 1029 MHz | Base Clock | 1029 MHz |
| 1124 MHz | Boost Clock | 1124 MHz |
| 1001 MHz 2 Gbps effective | Memory Clock | 1001 MHz 2 Gbps effective |
Render Config
| 384 | Shading Units | 384 |
| 16 | TMUs | 16 |
| 8 | ROPs | 8 |
| 64 KB (per SMM) | L1 Cache | 64 KB (per SMM) |
| 1024 KB | L2 Cache | 1024 KB |
Board Design
| IGP | Slot Width | IGP |
| 33 W | Thermal design power (TDP) | 33 W |
| No outputs | Display Connectors | No outputs |
API support
| 12 (11_0) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 3.0 | OpenCL | 3.0 |
| 1.1 | Vulkan | 1.1 |
| 5.1 | Shader Model | 5.1 |
| 5.0 | CUDA | 5.0 |