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 | 3DM Fire Strike (G) |
Performance Difference |
In laptops starting at... | Price Difference |
|---|---|---|---|---|---|
| 192. | NVIDIA GeForce GT 650M (2GB GDDR5) | 1416 | 0% | N/A | - |
| 193. | AMD Radeon 530 (2GB GDDR5) | 1416 | 0% | $399.99 |  43% |
| 194. | NVIDIA GeForce 840M (2GB DDR3) | 1412 |  1% |
$699.00 |  15% |
| 195. | AMD Radeon 520 (2GB GDDR5) | 1403 | 0% | $819.00 |  1% |
| 196. | Intel Iris Graphics 540 | 1403 | 0% | $812.60 | - |
| 197. | AMD Radeon HD 8750M (1GB GDDR5) | 1400 | - | N/A | - |
NVIDIA GeForce 840M (2GB DDR3) - gaming tests
We’ve tested NVIDIA GeForce 840M (2GB DDR3) on…
| # | Laptop series | 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 |