NVIDIA GeForce 825M vs NVIDIA GeForce 820M vs NVIDIA GeForce 845M
NVIDIA GeForce 825M
► remove from comparisonThe NVIDIA GeForce 825M (sometimes also called GT 825M) is a middle class DirectX 12 graphics card. It is based on the 28 nm Kepler architecture and uses the same GK208 chip as the GeForce GT 730M and 740M.
Architecture
GK208 is based on the Kepler architecture and offers two shader blocks, called SMX, each with 192 shaders for a total of 384 shader cores. The shaders are clocked at the same speed as the rest of the chip. Furthermore, the GK208 chip has 16 TMUs and 8 ROPs on a 64-bit memory interface.
PCIe 3.0 is now supported by the mobile Kepler series and GPU Boost 2.0 mode can automatically overclock the card if the laptop cooling system allows it. This feature is available on any notebook with a graphics card from the 800M series.
Performance
According to our benchmarks, the performance of the GeForce 825M is somewhere between the GT 730M and GT 740M. Current games (as of 2013/2014) can thus be played in 1366 x 768 and medium settings. However, very demanding games such as Crysis 3 or Battlefield 4 will require lower resolutions and/or details.
Features
The feature set of the 825M corresponds to the GT 730M and 740M. This includes support for up to 4 active displays. Furthermore, high resolution monitors of up to 3840x2160 pixels can now be connected using DisplayPort 1.2 or HDMI 1.4a if available. HD-Audio codecs, such as Dolby TrueHD and DTS-HD, can be transmitted via bitstream mode through the HDMI port. However, as most laptops will feature Optimus, the integrated GPU will likely have direct control over the display ports and may limit the feature set available by the Nvidia Kepler cards.
The 5th generation PureVideo HD video processor (VP5) offers hardware decoding of HD videos. Common codecs such as MPEG-1/2, MPEG-4 ASP, H.264 and VC1/WMV9 are fully supported up to 4K resolutions while VC1 and MPEG-4 are supported up to 1080p. Two streams can be decoded in parallel for features such as Picture-in-Picture. Another feature is the inclusion of a dedicated video encoding engine similar to Intel QuickSync that can be accessed via the NVENCI API.
Power Consumption
The power consumption of the GeForce 825M should be similar to the GT 730M. As a result, the Nvidia GPU is best suited for multimedia notebooks 14-inches in size or greater. The 800M series also supports Optimus to automatically switch between an integrated graphics card and the Nvidia GPU.
NVIDIA GeForce 820M
► remove from comparison
The NVIDIA GeForce 820M (or GT 820M) is an entry-level DirectX 12 compatible graphics card announced in January 2014. Its core is based on the 28nm GF117 chip (Fermi architecture) and is equipped with 64-bit DDR3 memory. Besides the slightly different clock rate, the 820M is almost identical to the old GeForce 710M and GT 720M.
Architecture
The GF117 is based on the optimized GF108 Fermi chip (GeForce GT 540M) and offers 96 shaders, 16 TMUs and 4 ROPs. Each shader core is clocked twice as fast as the rest of the graphics chip, a technique known as hot clocking. More detailed information on Fermi can be found on the GT 435M GPU page.
It should be noted that the GF117 does not offer dedicated graphic ports and can therefore only be used in conjunction with Optimus.
The 820M supports GPU Boost 2.0, which can automatically overclock the card if the laptop cooling system allows it. This feature is available on any notebook with a graphics card of the 800M series.
Performance
In our gaming benchmarks, the 3D performance of the GeForce 820M is similar to the former GT 720M and the Intel Iris Graphics 5100. This places the card in the entry level segment. Current games (as of 2013/2014) will run fluently only in low settings and resolutions.
Features
The shader cores (also called CUDA cores) can be used for general calculations with APIs such as CUDA, DirectCompute 2.1 and OpenCL. PhysX is theoretically possible, but the 820M is too slow to handle both PhysX and 3D rendering in modern games. 3D Vision is not supported according to Nvidia.
Power consumption
The power consumption of the Geforce 820M should be similar to the old GT 720M. As a result, the GPU is best suited for notebooks 13 inches in size or greater.
NVIDIA GeForce 845M
► remove from comparisonThe 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.
| NVIDIA GeForce 825M | NVIDIA GeForce 820M | NVIDIA GeForce 845M | ||||||||||||||||||||||||||||||||||||||||||||||
| GeForce 800M Series |
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| Architecture | Kepler | Fermi | Maxwell | |||||||||||||||||||||||||||||||||||||||||||||
| Pipelines | 384 - unified | 96 - unified | 384 - unified | |||||||||||||||||||||||||||||||||||||||||||||
| Core Speed | 850 MHz | 775 MHz | 1071 - 1150 (Boost) MHz | |||||||||||||||||||||||||||||||||||||||||||||
| Memory Speed | 1800 MHz | 1800 MHz | 2000 - 5000 MHz | |||||||||||||||||||||||||||||||||||||||||||||
| Memory Bus Width | 64 Bit | 64 Bit | 64/128 Bit | |||||||||||||||||||||||||||||||||||||||||||||
| Memory Type | DDR3 | DDR3 | DDR3, GDDR5 | |||||||||||||||||||||||||||||||||||||||||||||
| Max. Amount of Memory | 2048 MB | 2048 MB | 2048 MB | |||||||||||||||||||||||||||||||||||||||||||||
| Shared Memory | no | no | no | |||||||||||||||||||||||||||||||||||||||||||||
| API | DirectX 12 (FL 11_0), Shader 5.0, OpenGL 4.3 | DirectX 12 (FL 11_0), Shader 5.0 | DirectX 12 (FL 11_0), Shader 5.0, OpenGL 4.4 | |||||||||||||||||||||||||||||||||||||||||||||
| Power Consumption | 33 Watt | 15 Watt | ||||||||||||||||||||||||||||||||||||||||||||||
| Transistors | 1.3 Billion | 585 Million | ||||||||||||||||||||||||||||||||||||||||||||||
| technology | 28 nm | 28 nm | 28 nm | |||||||||||||||||||||||||||||||||||||||||||||
| Features | Optimus, PhysX, Verde Drivers, CUDA, 3D Vision, 3DTV Play | PhysX, Verde Drivers, CUDA, Play, Optimus, GPU Boost 2.0, GameWorks | GPU Boost 2.0, Optimus, PhysX, CUDA, GeForce Experience | |||||||||||||||||||||||||||||||||||||||||||||
| Notebook Size | medium sized | medium sized | ||||||||||||||||||||||||||||||||||||||||||||||
| Date of Announcement | 27.01.2014 | 07.01.2014 | 12.03.2014 | |||||||||||||||||||||||||||||||||||||||||||||
| Codename | N15V-GM | |||||||||||||||||||||||||||||||||||||||||||||||
| Shader Speed | 1550 MHz | |||||||||||||||||||||||||||||||||||||||||||||||
| Link to Manufacturer Page | www.geforce.com |
Benchmarks
3DM Vant. Perf. total + NVIDIA GeForce 825M
Cinebench R15 OpenGL 64 Bit + NVIDIA GeForce 825M
Average Benchmarks NVIDIA GeForce 825M → 100% n=10
Average Benchmarks NVIDIA GeForce 820M → 81% n=10
Average Benchmarks NVIDIA GeForce 845M → 141% n=10
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
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.
Battlefield Hardline
2015
Evolve
2015
F1 2014
2014
The Evil Within
2014
Ryse: Son of Rome
2014
Alien: Isolation
2014
Fifa 15
2014
Sims 4
2014
Risen 3: Titan Lords
2014
GRID: Autosport
2014
Watch Dogs
2014
Titanfall
2014
X-Plane 10.25
2013
Call of Duty: Ghosts
2013
Battlefield 4
2013
F1 2013
2013
Total War: Rome II
2013
Saints Row IV
2013
Dota 2
2013
Company of Heroes 2
2013
GRID 2
2013
Metro: Last Light
2013
BioShock Infinite
2013
SimCity
2013
Tomb Raider
2013
Crysis 3
2013
Dead Space 3
2013
Far Cry 3
2012
Assassin´s Creed III
2012
Hitman: Absolution
2012
Dishonored
2012
F1 2012
2012
Counter-Strike: GO
2012
Sleeping Dogs
2012
Max Payne 3
2012
Dirt Showdown
2012
Diablo III
2012
Risen 2: Dark Waters
2012
Mass Effect 3
2012
Anno 2070
2011
Battlefield 3
2011
Batman: Arkham City
2011
Dirt 3
2011
Civilization 5
2010
StarCraft 2
2010
Trackmania Nations Forever
2008
World of Warcraft
2005Average Gaming NVIDIA GeForce 825M → 100%
Average Gaming 30-70 fps → 100%
Average Gaming NVIDIA GeForce 820M → 86%
Average Gaming 30-70 fps → 86%
Average Gaming NVIDIA GeForce 845M → 120%
Average Gaming 30-70 fps → 115%
| NVIDIA GeForce 825M | NVIDIA GeForce 820M | NVIDIA GeForce 845M | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| low | med. | high | ultra | QHD | 4K | low | med. | high | ultra | QHD | 4K | low | med. | high | ultra | QHD | 4K | ||||
| Battlefield Hardline | 50.7 | 32.2 | 14 | 9.3 | |||||||||||||||||
| Evolve | 27.2 | 20 | 10.3 | 10.1 | |||||||||||||||||
| Dragon Age: Inquisition | 27.4 | 12 | 31.5 | 27 | 19 | 12.7 | |||||||||||||||
| Call of Duty: Advanced Warfare | 50.4 | 30.1 | 20.1 | 12.8 | |||||||||||||||||
| F1 2014 | 93 | 65 | 38 | 21 | 62 | 48 | |||||||||||||||
| Alien: Isolation | 41 | 27 | 14.4 | 68.5 | 33.8 | 27.4 | |||||||||||||||
| Middle-earth: Shadow of Mordor | 27 | 17 | 9 | 6.7 | 58.4 | 41.2 | 22.4 | ||||||||||||||
| Fifa 15 | 57.4 | 47.9 | 27.1 | 64.1 | 41.2 | ||||||||||||||||
| Sims 4 | 141.9 | 48.3 | 25.3 | 20.5 | 56.2 | 30.7 | 26.3 | ||||||||||||||
| Thief | 26.2 | 15.5 | 12.4 | 20 | 13 | 11 | 31.3 | 20.1 | 17.3 | 8.3 | |||||||||||
| Battlefield 4 | 51.2 | 34.7 | 24.7 | 38.8 | 26.3 | 18.7 | 56.4 | 37 | 27.1 | 10.9 | |||||||||||
| Dota 2 | 74.8 | 26.9 | 49.5 | 61.5 | 28 | ||||||||||||||||
| BioShock Infinite | 69.2 | 37.5 | 31.1 | 56 | 31 | 26 | 8.1 | 42.7 | 39.3 | 13.9 | |||||||||||
| Tomb Raider | 91 | 44 | 24 | 76 | 39 | 23 | 47.3 | 36.7 | 14.8 | ||||||||||||
| Crysis 3 | 32.2 | 19.1 | 25.1 | 15.6 | 29.4 | 18.9 | 6.3 | ||||||||||||||
| NVIDIA GeForce 825M | NVIDIA GeForce 820M | NVIDIA GeForce 845M | |||||||||||||||||||
| low | med. | high | ultra | QHD | 4K | low | med. | high | ultra | QHD | 4K | low | med. | high | ultra | QHD | 4K | < 30 fps < 60 fps < 120 fps ≥ 120 fps | 1 2 2 | 2 3 1 | 3 1 | 1 | | | < 30 fps < 60 fps < 120 fps ≥ 120 fps | 4 4 2 1 | 6 4 1 | 7 2 | 5 | | | < 30 fps < 60 fps < 120 fps ≥ 120 fps | 1 6 | 4 7 2 | 8 4 2 | 12 2 | | |
For more games that might be playable and a list of all games and graphics cards visit our Gaming List
