NVIDIA GeForce 840M, codenamed “N15S-GT”, is a mid-range graphics chip, announced in Q1 of 2014. It is part of the Maxwell generation and relies on a GM108 core, constructed through a 28nm process. It consists of three shader blocks, known as SMM, and each of those has 128 smaller shader cores, also known as CUDA, for a total of 384 CUDA cores. The package also includes 24 texture cores and 8 raster cores.
All of them operate at 1029MHz, but NVIDIA’s GPU Boost 2.0 can increase that frequency based on the laptop’s cooling capacity.
The chip also has a 64bit bus and DDR3 memory. NVIDIA GeForce 840M supports DirectX 11.2, Pixel Shader 5.0, Optimus, SLI, PhysX, OpenCL 1.1, OpenGL 4.4, DirectCompute and CUDA. Memory bandwidth goes up to 15.4GB/sec. Max resolutions (WxH) are 2560×1600 digital and 2048×1536 analog.
You can find all available laptops with GeForce 840M here:
http://amzn.to/2uQkrob
NVIDIA GeForce 840M (2GB DDR3) - benchmark tests
NVIDIA GeForce 840M (2GB DDR3) vs competitors:
| # | GPU | Memory bus | Performance score |
In laptops starting at... |
|---|---|---|---|---|
| 149. | Intel Iris Graphics 550 | - | 0.4/10 | N/A |
| 150. | NVIDIA GeForce 940MX (4GB DDR3) | 64-bit | 0.4/10 | $577.38 |
| 151. | NVIDIA GeForce 840M (2GB DDR3) | 64-bit | 0.4/10 | $749.00 |
| 152. | AMD Radeon R7 M445 (2GB GDDR5) | 64-bit | 0.4/10 | $849.99 |
| 153. | NVIDIA Quadro K620M (2GB DDR3) | 64-bit | 0.4/10 | N/A |
| 154. | AMD Radeon 520 (2GB GDDR5) | 64-bit | 0.4/10 | N/A |
We’ve tested NVIDIA GeForce 840M (2GB DDR3) on…
| # | Laptop | 3DMark Fire Strike (G) | Unigine Heaven 3.0 | Unigine Heaven 4.0 | Unigine Superposition | Price |
|---|---|---|---|---|---|---|
| 1. | ASUS N56JN | 1636.00 | 470.00 | 0.00 | 0.00 | N/A |
| 2. | Acer Aspire E5-572G | 1608.00 | 438.00 | 0.00 | 0.00 | N/A |
| 3. | ASUS F555LN | 1576.00 | 440.00 | 320.00 | 0.00 | N/A |
| 4. | Dell Inspiron 17 (5749) | 827.00 | 433.00 | 340.00 | 0.00 | N/A |
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