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NVIDIA GeForce 840M

NVIDIA GeForce 840M

The NVIDIA GeForce 840M is a mid-range DirectX 12-compatible graphics card for laptops unveiled in March 2014. It is one of the first cards based on Nvidia's new Maxwell architecture (GM108 chip), but is still manufactured in 28 nm. The 840M offers 384 shader units clocked at 1029 MHz (+ Boost) as well as 2 GB of DDR3 memory (64 bit, 2000 MHz effective).

Architecture

Compared to Kepler, Maxwell has been optimized in several details to increase power efficiency. Smaller Streaming Multiprocessors (SMM) with only 128 ALUs (Kepler: 192) and an optimized scheduler should lead to better utilization of the shaders. Nvidia promises that a Maxwell SMM with 128 ALUs can offer 90 percent of the performance of a Kepler SMX with 192 ALUs. GM108 features 3 SMMs and thus 384 shader cores, 24 TMUs and 8 ROPs (64-bit interface).

Another optimization is the massively enlarged L2 cache. The larger size can process some of the memory traffic to allow for a relatively narrow memory interface without significantly reducing performance.

Similar to Fermi and Kepler, the GM107/GM108 support DirectX 12 with feature level 11_0 only.

Performance

According to our benchmarks, the GeForce 840M is about 30 percent faster than the old GT 740M and just slightly behind a GeForce GT 750M (DDR3 version). Many games of 2013/2014 can be played fluently in WXGA resolution (1366 x 768) and medium or high detail settings. However, very demanding games such as Crysis 3 or Battlefield 4 will require lower resolutions and/or details.

Features

GM108 integrates the sixth generation of the PureVideo HD video engine (VP6), offering a better decoding performance for H.264 and MPEG-2 videos. Of course, VP6 supports all features of previous generations (4K support, PIP, video encoding via NVENC API). Unfortunately, HDMI 2.0 is still not supported.

Power Consumption

The power consumption of the GeForce 840M should be about 30 Watts or lower. Therefore, the GPU is best suited for laptops 13 - 14 inches in size and above. The 800M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU.

ManufacturerNVIDIA
GeForce 800M Series
GeForce 845M compare 384 @ 1.07 - 1.15 GHz64/128 Bit @ 2000 - 5000 MHz
GeForce 840M 384 @ 1.03 GHz64 Bit @ 2000 MHz
GeForce 830M compare 256 @ 1.03 - 1.15 GHz64 Bit @ 1800 MHz
GeForce 825M compare 384 @ 0.85 GHz64 Bit @ 1800 MHz
GeForce 820M compare 96 @ 0.78 GHz64 Bit @ 1800 MHz
CodenameN15S-GT
ArchitectureMaxwell
Pipelines384 - unified
Core Speed1029 MHz
Memory Speed2000 MHz
Memory Bus Width64 Bit
Memory TypeDDR3
Max. Amount of Memory4096 MB
Shared Memoryno
DirectXDirectX 12 (FL 11_0), Shader 5.0
technology28 nm
FeaturesGPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience, GameWorks
Notebook Sizemedium sized
Date of Announcement12.03.2014
Link to Manufacturer Pagehttp://www.nvidia.de/object/geforce-800m...

Benchmarks

Performance Rating - 3DMark 11 + Fire Strike + Time Spy
6.2 pt (7%)
3DMark - 3DMark Cloud Gate Score
min: 4600     avg: 5952     median: 5829 (8%)     max: 8314 Points
3DMark - 3DMark Cloud Gate Graphics
min: 7985     avg: 8813     median: 8723.5 (4%)     max: 9691 Points
3DMark - 3DMark Fire Strike Standard Score
min: 1286     avg: 1375     median: 1361 (4%)     max: 1595 Points
3DMark - 3DMark Fire Strike Standard Graphics
min: 1471     avg: 1572     median: 1573 (3%)     max: 1713 Points
3DMark - 3DMark Ice Storm Graphics
min: 39342     avg: 59792     median: 54117 (7%)     max: 87016 Points
3DMark 11 - 3DM11 Performance Score
min: 2260     avg: 2412     median: 2378 (6%)     max: 2683 Points
3DMark 11 - 3DM11 Performance GPU
min: 2282     avg: 2371     median: 2340 (4%)     max: 2511 Points
3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Standard 1280x1024 +
SPECviewperf 11
specvp11 snx-01 +
specvp11 tcvis-02 +
specvp11 sw-02 +
specvp11 proe-05 +
specvp11 maya-03 +
specvp11 lightwave-01 +
specvp11 ensight-04 +
specvp11 catia-03 +
SPECviewperf 12
specvp12 sw-03 +
specvp12 snx-02 +
specvp12 showcase-01 +
specvp12 mediacal-01 +
specvp12 maya-04 +
specvp12 energy-01 +
specvp12 creo-01 +
specvp12 catia-04 +
Cinebench R10 Cinebench R10 Shading (32bit) +
Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +
Cinebench R15
Cinebench R15 OpenGL 64 Bit +
Cinebench R15 OpenGL Ref. Match 64 Bit +
GFXBench (DX / GLBenchmark) 2.7
GLBench 2.7 T-Rex HD Offscreen C24Z16 +
GLBench 2.7 T-Rex HD Onscreen C24Z16 +
LuxMark v2.0 64Bit - LuxMark v2.0 Sala GPU
min: 616     avg: 648     median: 651 (2%)     max: 676 Samples/s
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

FIFA 16

FIFA 16

2015
low 1280x720
88.5  fps    + Compare
high 1366x768
57.9  fps    + Compare
ultra 1920x1080
38.5  fps    + Compare
» With all tested laptops playable in detail settings ultra.
low 1366x768
103.4  fps    + Compare
med. 1366x768
78.1  fps    + Compare
high 1920x1080
36.6  fps    + Compare
ultra 1920x1080
22.5  fps    + Compare
» With all tested laptops playable in detail settings high.
low 1024x768
58  fps    + Compare
med. 1366x768
39.9  fps    + Compare
high 1920x1080
16.1  fps    + Compare
ultra 1920x1080
11.9  fps    + Compare
» With all tested laptops playable in detail settings med..
Mad Max

Mad Max

2015
med. 1366x768
34.4  fps    + Compare
high 1920x1080
17  fps    + Compare
ultra 1920x1080
15.5  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1280x720
21 25 ~ 23 fps    + Compare
med. 1366x768
18 21 ~ 20 fps    + Compare
high 1920x1080
12 14 ~ 13 fps    + Compare
ultra 1920x1080
7 7 ~ 7 fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
27.8 29 ~ 28 fps    + Compare
med. 1366x768
17.6 18 ~ 18 fps    + Compare
high 1920x1080
8.3 9.2 ~ 9 fps    + Compare
ultra 1920x1080
6 6.3 ~ 6 fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.