NVIDIA GeForce 820M
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.
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.
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.
| Manufacturer | NVIDIA |
| GeForce 800M Series | GeForce 845M  | 384 @ 1071 - 1150 MHz | 64/128 Bit @ 2000 - 5000 MHz | | GeForce 840M | 384 @ 1029 MHz | 64 Bit @ 2000 MHz | | GeForce 830M | 256 @ 1029 - 1150 MHz | 64 Bit @ 1800 MHz | | GeForce 825M | 384 @ 850 MHz | 64 Bit @ 1800 MHz | | GeForce 820M | 96 @ 775 MHz | 64 Bit @ 1800 MHz |
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| Codename | N15V-GM |
| Architecture | Fermi |
| Pipelines | 96 - unified |
| Core Speed | 775 MHz |
| Shader Speed | 1550 MHz |
| Memory Speed | 1800 MHz |
| Memory Bus Width | 64 Bit |
| Memory Type | DDR3 |
| Max. Amount of Memory | 2048 MB |
| Shared Memory | no |
| DirectX | DirectX 12 (FL 11_0), Shader 5.0 |
| Transistor Count | 585 Million |
| technology | 28 nm |
| Features | PhysX, Verde Drivers, CUDA, Play, Optimus, GPU Boost 2.0, GameWorks |
| Date of Announcement | 07.01.2014 |
| Link to Manufacturer Page | ttp://www.geforce.com/hardware/notebook-... |
Benchmarks
Performance Rating - 3DMark 11 + Fire Strike + Time Spy
6.4 pt (7%)
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3DMark - Cloud Gate Standard Score 1280x720
min: 3942 avg: 4559 median: 4520.5 (11%) max: 6001 Points
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3DMark - Cloud Gate Standard Graphics 1280x720
min: 5398 avg: 5968 median: 6073.5 (7%) max: 6152 Points
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3DMark - Fire Strike Score 1920x1080
min: 763 avg: 830 median: 829 (7%) max: 888 Points
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3DMark - Fire Strike Graphics 1920x1080
min: 817 avg: 884 median: 897 (6%) max: 903 Points
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3DMark - Ice Storm Standard Graphics 1280x720
min: 48165 avg: 62879 median: 63709.5 (8%) max: 68464 Points
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3DMark 11 - Performance 1280x720
min: 1302 avg: 1382 median: 1383 (8%) max: 1500 points
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3DMark 11 - Performance GPU 1280x720
min: 1194 avg: 1259 median: 1266.5 (7%) max: 1280 points
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3DMark Vantage
P Result 1280x1024 +3DMark Vantage - P Result 1280x1024
min: 4965 avg: 5195 median: 5105.5 (11%) max: 5603 Points
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NVIDIA GeForce GT 240 GDDR5 1%
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P GPU no PhysX 1280x1024 +3DMark Vantage - P GPU no PhysX 1280x1024
min: 4092 avg: 4277 median: 4254 (9%) max: 4484 Points
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NVIDIA GeForce GT 240 GDDR5 2%
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3DMark 03 - Standard 1024x768
16401 Points (11%)
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3DMark 05 - Standard 1024x768
14352 Points (39%)
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3DMark 06 Standard 1280x1024 +min: 6362 avg: 7350 median: 7518 (17%) max: 8284 Points
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Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
16.4 fps (9%)
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ATI Radeon HD 5570 -4%
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Windows 7 Experience Index - Gaming graphics
6.6 points (84%)
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Windows 7 Experience Index - Graphics
5.1 points (65%)
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Cinebench R10 Shading 32Bit +Cinebench R10 - Shading 32Bit
min: 38.75 avg: 4363 median: 5557 (27%) max: 6433 Points
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Cinebench R11.5 OpenGL 64Bit +Cinebench R11.5 - OpenGL 64Bit
min: 22.43 avg: 27.9 median: 27.8 (20%) max: 31.67 Points
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Cinebench R15
OpenGL 64Bit +Cinebench R15 - OpenGL 64Bit
min: 24.93 avg: 34.5 median: 35.6 (16%) max: 38.02 Points
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Ref. Match 64Bit +Cinebench R15 - Ref. Match 64Bit
99.6 Points (100%)
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LuxMark v2.0 64Bit - Room GPUs-only
min: 204 avg: 224 median: 223.5 (2%) max: 243 Samples/s
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LuxMark v2.0 64Bit - Sala GPUs-only
min: 343 avg: 380 median: 379.5 (4%) max: 416 Samples/s
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ComputeMark v2.1 - Normal, Score 1024x600
min: 714 avg: 718 median: 718 (7%) max: 722 Points
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- 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.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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» With all tested laptops playable in detail settings high.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings high.
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» With all tested laptops playable in detail settings med..
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» With all tested laptops playable in detail settings low.
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» With all tested laptops playable in detail settings med..
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» The benchmarks indicate that the game is not playable in the tested settings.
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» The benchmarks indicate that the game is not playable in the tested settings.
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» With all tested laptops playable in detail settings low.
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