NVIDIA GeForce 840M

NVIDIA GeForce 840M

The NVIDIA GeForce 840M is a mid-range DirectX 11-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 11.2 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

128 Bit
GeForce 840M 384 @ 1029MHz64 Bit @ 2000MHz

GeForce 830M

256 @ 1029 (?)MHz64 Bit @ 1800 (?)MHz

GeForce 825M

384 @ 850MHz64 Bit @ 1800MHz

GeForce 820M

96 @ 775MHz64 Bit @ 1800MHz
CodenameN15S-GT
ArchitectureMaxwell
Pipelines384 - unified
Core Speed *1029 MHz
Memory Speed *2000 MHz
Memory Bus Width64 Bit
Memory TypeDDR3
Max. Amount of Memory2048 MB
Shared Memoryno
DirectXDirectX 11, Shader 5.0
technology28 nm
FeaturesGPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience
Notebook Sizemedium sized
Date of Announcement12.03.2014
Link to Manufacturer Pagehttp://www.nvidia.de/object/geforce-800m...
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

Cinebench R15 - Ref. Match 64Bit
0% 100%
min: 99.6      avg: 99.6 (100%)     median: 99.6 (100%)     max: 99.6 Points
Cinebench R15 - OpenGL 64Bit
0% 100%
min: 47.59      avg: 53.7 (45%)     median: 55.9 (47%)     max: 58.77 Points
3DMark (2013) - Fire Strike Standard Graphics 1920x1080
0% 100%
min: 1471      avg: 1565.8 (13%)     median: 1577.5 (13%)     max: 1635 Points
3DMark (2013) - Cloud Gate Standard Graphics 1280x720
0% 100%
min: 7985      avg: 8886.5 (12%)     median: 8924 (12%)     max: 9452 Points
3DMark (2013) - Ice Storm Standard Graphics 1280x720
0% 100%
min: 39746      avg: 61413.1 (8%)     median: 58426.5 (8%)     max: 84573 Points
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
0% 100%
min: 22.5      avg: 22.5 (15%)     median: 22.5 (15%)     max: 22.5 fps
ComputeMark v2.1 - Normal, Score 1024x600
0% 100%
min: 1671      avg: 1671 (29%)     median: 1671 (29%)     max: 1671 Points
LuxMark v2.0 64Bit - Room Scene, OpenCL GPUs-only
0% 100%
min: 374      avg: 374 (24%)     median: 374 (24%)     max: 374 Samples/s
LuxMark v2.0 64Bit - Sala Scene, OpenCL GPUs-only
0% 100%
min: 676      avg: 676 (27%)     median: 676 (27%)     max: 676 Samples/s
3DMark 11 - Performance GPU 1280x720
0% 100%
min: 2308      avg: 2380.4 (15%)     median: 2336 (15%)     max: 2493 points
3DMark 11 - Performance 1280x720
0% 100%
min: 2336      avg: 2434 (19%)     median: 2385 (18%)     max: 2562 points
3DMark Vantage - P GPU no PhysX 1280x1024
0% 100%
min: 6602      avg: 6901 (15%)     median: 6795 (15%)     max: 7412 Points
3DMark Vantage - P Result no PhysX 1280x1024
0% 100%
min: 6996      avg: 7461.5 (19%)     median: 7359 (19%)     max: 8132 Points
3DMark 06
0% 100%
min: 9895      avg: 10181.7 (34%)     median: 10318 (34%)     max: 10332 Points
3DMark 05 - Standard 1024x768
0% 100%
min: 17271      avg: 17271 (47%)     median: 17271 (47%)     max: 17271 Points
3DMark 03 - Standard 1024x768
0% 100%
min: 20038      avg: 20038 (13%)     median: 20038 (13%)     max: 20038 Points
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
0% 100%
min: 30.1      avg: 30.1 (16%)     median: 30.1 (16%)     max: 30.1 fps
Cinebench R11.5 - OpenGL 64Bit
0% 100%
min: 33.77      avg: 40.5 (37%)     median: 41.1 (37%)     max: 48.33 Points
Cinebench R10 - Shading 32Bit
0% 100%
min: 6348      avg: 6497 (54%)     median: 6538.5 (54%)     max: 6563 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card

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 detailled information on the benchmark results, click on the fps number.

Watch Dogs
low 1024x768
38.8  fps      Compare
med. 1366x768
28.9  fps      Compare
high 1920x1080
15.3  fps      Compare
» With all tested laptops playable in detail settings low.
Wolfenstein: The New Order
low 1280x720
31.1 32.1 ~ 32 fps      Compare
med. 1280x720
30.8 31.1 ~ 31 fps      Compare
high 1920x1080
15.2 15.4 ~ 15 fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
The Elder Scrolls Online
low 1024x768
67.3 75 ~ 71 fps      Compare
med. 1366x768
46.6 53.1 ~ 50 fps      Compare
high 1366x768
33.2 36.3 ~ 35 fps      Compare
ultra 1920x1080
17.9  fps      Compare
» With all tested laptops playable in detail settings med..
Titanfall

Titanfall

2014
low 1024x768
53.6 55.9 ~ 55 fps      Compare
med. 1366x768
37.2 43.7 ~ 40 fps      Compare
high 1366x768
28.9 36.4 ~ 33 fps      Compare
ultra 1920x1080
22.7  fps      Compare
» With all tested laptops playable in detail settings med..
Thief

Thief

2014
low 1024x768
32.7 32.9 33.9 35.2 ~ 34 fps      Compare
med. 1366x768
21.3 21.7 22.3 25.5 ~ 23 fps      Compare
high 1366x768
17.1 17.6 17.7 20.3 ~ 18 fps      Compare
ultra 1920x1080
8.6 9.3 ~ 9 fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
AssassinĀ“s Creed IV: Black Flag
low 1024x768
41.2  fps      Compare
med. 1366x768
31.6  fps      Compare
high 1366x768
18.2  fps      Compare
» With all tested laptops playable in detail settings low.
X-Plane 10.25
low 1024x768
70.5 82.3 ~ 76 fps      Compare
med. 1366x768
33.6 40 ~ 37 fps      Compare
high 1366x768
16.7 19.9 ~ 18 fps      Compare
ultra 1920x1080
10.5  fps      Compare
» With most tested laptops playable in detail settings med..
Need for Speed: Rivals
low 1024x768
30  fps      Compare
med. 1366x768
30  fps      Compare
high 1366x768
24.9  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Call of Duty: Ghosts
low 1024x768
57.9 64.2 ~ 61 fps      Compare
med. 1366x768
38.2 41.7 ~ 40 fps      Compare
high 1366x768
22 22.4 ~ 22 fps      Compare
ultra 1920x1080
10.8  fps      Compare
» With all tested laptops playable in detail settings med..
Battlefield 4
low 1024x768
58.6 69.6 ~ 64 fps      Compare
med. 1366x768
40.2 47.4 ~ 44 fps      Compare
high 1366x768
27.5 30.6 ~ 29 fps      Compare
ultra 1920x1080
11.2  fps      Compare
» With all tested laptops playable in detail settings med..
Batman: Arkham Origins
low 1024x768
98  fps      Compare
med. 1366x768
61  fps      Compare
high 1366x768
29  fps      Compare
» With all tested laptops playable in detail settings med..
F1 2013

F1 2013

2013
low 1024x768
105 105 ~ 105 fps      Compare
med. 1366x768
83 88 ~ 86 fps      Compare
high 1366x768
74 81 ~ 78 fps      Compare
ultra 1920x1080
36 37 ~ 37 fps      Compare
» With all tested laptops playable in detail settings ultra.
Fifa 14

Fifa 14

2013
med. 1366x768
146.1  fps      Compare