The NVIDIA GeForce GTX 670MX is a high-end DirectX 11-compatible graphics card for laptops. As opposed to the Fermi-based GTX 670M, the 670MX uses a newer 28nm GK106 core based on the Kepler architecture, similar in structure to the GTX 675MX and 680M. Compared to the slightly faster GTX 675MX, the 670MX offers a narrower memory bandwidth of 67.2 GB/s (vs. 115.2 GB/s of the 675MX) due to both slower memory modules and a smaller 192-bit bus width.


The Kepler architecture is the successor to the Fermi architecture that first appeared in laptops with the GeForce 400M series. The GK106 Kepler core offers five shader blocks, called SMX, that are clocked at the same speed as the central core. In the GTX 670MX, all five blocks are active for a total of 960 CUDA cores. Although the Kepler architecture can utilize more shader cores than a Fermi chip, its shaders can be up to twice as power efficient.  However, due to the missing hot clock of the shader domain, two shaders of a Kepler chip are of similar speed to one shader of a Fermi chip (as the latter is clocked twice as fast).

PCIe 3.0 is now supported by the mobile Kepler series and an optional Turbo mode can automatically overclock the Nvidia card by a theoretical 15 percent if the laptop cooling system allows it. The implementation of this boost mode is done in the BIOS, but it is ultimately dependent upon the manufacturer of the laptop.


The graphics performance of the GeForce GTX 670MX is clearly above the older GTX 670M and therefore in the high-end class of mobile graphics cards of 2012. Only the extremely demanding title The Witcher 2 may not run fluently in ultra settings. Battlefield 3, Skyrim, and Crysis 2, for example, are playable at the highest detail settings.


The improved feature set now 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) is also integrated in the GK104 core and 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 novelty is the inclusion of a dedicated video encoding engine similar to Intel QuickSync that can be accessed by the NVENC API.

The power consumption of the GeForce GTX 670MX should be similar to the GTX 670M and is therefore best suited for large notebooks (17-inches or greater) and desktop replacements.

GeForce GTX 600M Series
GeForce GTX 680M SLI (compare) 2688 @ 720 MHz2x 256 Bit @ 3600 MHz
GeForce GTX 680MX (compare) 1536 @ 720 MHz256 Bit @ 5000 MHz
GeForce GTX 675M SLI (compare) 768 @ 620 MHz256 Bit @ 3000 MHz
GeForce GTX 680M (compare) 1344 @ 720 MHz256 Bit @ 3600 MHz
GeForce GTX 670MX SLI (compare) 1920 @ 600 MHz2x 192 Bit @ 2800 MHz
GeForce GTX 675MX (compare) 960 @ 600 MHz256 Bit @ 3600 MHz
GeForce GTX 675M (compare) 384 @ 620 MHz256 Bit @ 3000 MHz
GeForce GTX 670MX 960 @ 600 MHz192 Bit @ 2800 MHz
GeForce GTX 670M (compare) 336 @ 598 MHz192 Bit @ 3000 MHz
GeForce GTX 660M (compare) 384 @ 835 MHz128 Bit @ 4000 MHz
Pipelines960 - unified
Core Speed600 MHz
Memory Speed2800 MHz
Memory Bus Width192 Bit
Memory TypeGDDR5
Shared Memoryno
DirectXDirectX 11, Shader 5.1
Transistor Count2540 Million
technology28 nm
FeaturesOptimus, SLI, PhysX, Verde Drivers, CUDA, 3D Vision, 3DTV Play
Notebook Sizelarge
Date of Announcement01.10.2012
Link to Manufacturer Page


3DMark 11 - Performance GPU 1280x720
min: 3567     avg: 3587     median: 3587 (7%)     max: 3607 points
3DMark Vantage
P Result 1280x1024 +
P GPU no PhysX 1280x1024 +
3DMark 03 - Standard 1024x768
min: 46884     avg: 47429     median: 47429 (25%)     max: 47974 Points
3DMark 05 - Standard 1024x768
min: 26819     avg: 27040.5     median: 27040 (51%)     max: 27262 Points
3DMark 06 Standard 1280x1024 +
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
34.4 fps (13%)
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
45.2 fps (19%)
SPECviewperf 11
Siemens NX 1920x1080 +
Tcvis 1920x1080 +
SolidWorks 1920x1080 +
Pro/ENGINEER 1920x1080 +
Maya 1920x1080 +
Lightwave 1920x1080 +
Ensight 1920x1080 +
Catia 1920x1080 +
Cinebench R11.5 OpenGL 64Bit +
- 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.



low 1024x768
60  fps    + Compare
med. 1366x768
57.8  fps    + Compare
high 1366x768
48.1  fps    + Compare
ultra 1920x1080
35.3  fps    + Compare
» With all tested laptops playable in detail settings ultra.


low 1024x768
54.6  fps    + Compare
med. 1366x768
39.7  fps    + Compare
high 1366x768
34.4  fps    + Compare
ultra 1920x1080
18.5  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
61  fps    + Compare
med. 1366x768
50.2  fps    + Compare
high 1366x768
31.8  fps    + Compare
ultra 1920x1080
16.3  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
82.5  fps    + Compare
med. 1366x768
38.9  fps    + Compare
high 1366x768
22.3  fps    + Compare
ultra 1920x1080
13.7  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
81.1  fps    + Compare
med. 1366x768
65.5  fps    + Compare
high 1366x768
38  fps    + Compare
ultra 1920x1080
19.2  fps    + Compare
» With all tested laptops playable in detail settings high.
low 1024x768
98.4  fps    + Compare
med. 1366x768
68.8  fps    + Compare
high 1366x768
44.9  fps    + Compare
ultra 1920x1080
18.6  fps    + Compare
» With all tested laptops playable in detail settings high.