GeForce 840M
| Manufacturer: | NVIDIA |
| Series: | GeForce 800M |
| Codename: | GM108 N15S-GT |
| Release date: | 2014. March 12. |
| Die count: | 1 |
| Fab: | 28 nm |
| Bus interface: | PCI-E 3.0 x16 |
Clock rates
| Core clock: | 1029 MHz |
| Core clock (Boost): | 1124 MHz |
| Memory clock: | 1001 MHz |
| Effective memory clock (DDR): | 8008 MHz |
Memory
| Memory size: | 1024 MB |
| Memory bus type: | DDR3 |
| Memory bus width: | 64 bit |
| Memory bandwidth (maximum): | 16 GB/s |
Core units
| Unified shader units: | 384 |
| Texture mapping units (TMU): | 16 |
| Render output units (ROP): | 8 |
| SM count: | 3 |
Supported Technologies:
| DirectX: | 12 |
| OpenGL: | 4.5 |
| OpenCL: | 1.2 |
Performance
| Pixel fillrate: | 8.23 (GP/s) |
| Texture fillrate: | 16.5 (GT/s) |
| Thermal Design Power (TDP,Max): | 33 W |
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