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NVIDIA GeForce 845M

The NVIDIA GeForce 845M is a mid-range, DirectX 12-compatible graphics card for laptops unveiled in spring 2014. It is one of the first cards based on Nvidia's new Maxwell architecture, but is still manufactured in 28 nm. In addition to a version based on GM107 (partially deactivated to 384 ALUs, 128-bit, DDR3 memory), there is also another version using the GM108 chip (384 Shader, 64-bit, GDDR5 memory). Both models offer approximately the same performance.

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.

Another optimization is the massively enlarged L2 cache (GM107: 2 MB). 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 and GM108 support DirectX 12 with feature level 11.0 only.

Performance

Thanks to the 128-bit memory interface (respectively the GDDR5 memory of the GM108 model), the GeForce 845M offers about 30 percent more performance than the GeForce 840M. However, a GeForce GTX 850M is still an additional 50 percent faster. Many games of 2013/2014 (Tomb Raider or BioShock Infinite, etc.) can be played fluently in 1366 x 768 and high detail settings. Very demanding games such as Crysis 3 or Battlefield 4 will require lower resolutions and/or details.

Features

GM107/108 integrate 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 845M should be in a range of about 30 - 35 Watts. Therefore, the card is best suited for 14-inch laptops or larger. The 800M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU.

ManufacturerNVIDIA
GeForce 800M Series
GeForce 845M 384 @ 1071 - 1150 (Boost) MHz64/128 Bit @ 2000 - 5000 MHz
GeForce 840M 384 @ 1029 MHz64 Bit @ 2000 MHz
GeForce 830M 256 @ 1029 - 1150 (Boost) MHz64 Bit @ 1800 MHz
GeForce 825M 384 @ 850 MHz64 Bit @ 1800 MHz
GeForce 820M 96 @ 775 MHz64 Bit @ 1800 MHz
ArchitectureMaxwell
Pipelines384 - unified
Core Speed *1071 - 1150 (Boost) MHz
Memory Speed *2000 - 5000 MHz
Memory Bus Width64/128 Bit
Memory TypeDDR3/GDDR5
Max. Amount of Memory2048 MB
Shared Memoryno
DirectXDirectX 12 (FL 11_0), Shader 5.0
technology28 nm
FeaturesGPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience
Notebook Sizemedium sized
Date of Announcement12.03.2014
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

Cinebench R15 - Ref. Match 64Bit
0%
100%
minmin: 99.6     avg: 99.6 (100%)     median: 99.6 (100%)     max: 99.6 Points
3DMark (2013) - Fire Strike Standard Graphics 1920x1080
0%
100%
minmin: 2362     avg: 2362 (12%)     median: 2362 (12%)     max: 2362 Points
3DMark (2013) - Fire Strike Standard Score 1920x1080
0%
100%
minmin: 2113     avg: 2113 (15%)     median: 2113 (15%)     max: 2113 Points
3DMark (2013) - Cloud Gate Standard Graphics 1280x720
0%
100%
minmin: 13754     avg: 13754 (11%)     median: 13754 (11%)     max: 13754 Points
3DMark 11 - Performance GPU 1280x720
0%
100%
minmin: 2973     avg: 2973 (13%)     median: 2973 (13%)     max: 2973 points
3DMark 11 - Performance 1280x720
0%
100%
minmin: 3019     avg: 3019 (17%)     median: 3019 (17%)     max: 3019 points
Cinebench R11.5 - OpenGL 64Bit
0%
100%
minmin: 37.19     avg: 37.2 (30%)     median: 37.2 (30%)     max: 37.19 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.

Battlefield Hardline
low 1024x768
50.7  fps      Compare
med. 1366x768
32.2  fps      Compare
high 1920x1080
14  fps      Compare
ultra 1920x1080
9.3  fps      Compare
» With all tested laptops playable in detail settings low.
Evolve

Evolve

2015
low 1024x768
27.2  fps      Compare
med. 1366x768
20  fps      Compare
high 1920x1080
10.3  fps      Compare
ultra 1920x1080
10.1  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Dragon Age: Inquisition
low 1024x768
31.5  fps      Compare
med. 1366x768
27  fps      Compare
high 1920x1080
19  fps      Compare
ultra 1920x1080
12.7  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Call of Duty: Advanced Warfare
low 1024x768
50.4  fps      Compare
med. 1366x768
30.1  fps      Compare
high 1920x1080
20.1  fps      Compare
ultra 1920x1080
12.8  fps      Compare
» With all tested laptops playable in detail settings low.
Alien: Isolation
med. 1366x768
68.5  fps      Compare
high 1920x1080
33.8  fps      Compare
ultra 1920x1080
27.4  fps      Compare
» With all tested laptops playable in detail settings med..
Middle-earth: Shadow of Mordor
low 1280x720
58.4  fps      Compare
med. 1344x756
41.2  fps      Compare
high 1920x1080
22.4  fps      Compare
» With all tested laptops playable in detail settings med..
Fifa 15

Fifa 15

2014
high 1366x768
64.1  fps      Compare
ultra 1920x1080
41.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
Sims 4

Sims 4

2014
med. 1366x768
56.2  fps      Compare
high 1920x1080
30.7  fps      Compare
ultra 1920x1080
26.3  fps      Compare
» With all tested laptops playable in detail settings med..
Thief

Thief

2014
low 1024x768
31.3  fps      Compare
med. 1366x768
20.1  fps      Compare
high 1366x768
17.3  fps      Compare
ultra 1920x1080
8.3  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Battlefield 4
low 1024x768
56.4  fps      Compare
med. 1366x768
37  fps      Compare
high 1366x768
27.1  fps      Compare
ultra 1920x1080
10.9  fps      Compare
» With all tested laptops playable in detail settings med..