The NVIDIA GeForce GTX 675MX is a high-end DirectX 11.1-compatible graphics card for laptops and was announced in October 2012. As opposed to the Fermi-based GTX 675M, the 675MX uses a newer 28nm GK104 core based on the Kepler architecture, similar to the GeForce 680M.


The Kepler architecture is the successor to the Fermi architecture that first appeared in laptops with the GeForce 400M series. The GK104 Kepler core offers eight shader blocks, called SMX, that are clocked at the same speed as the central core. In the GTX 675MX, five blocks are active for a total of 1344 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 675MX is significantly higher than the old Fermi based GTX 675M and therefore similar fast as the Geforce GTX 560M SLI combination. Even demanding games of 2012 run fluently in highest detail settings, except for titles like Sleeping Dogs or Guild Wars 2.


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 675M should be slightly below the GTX 680M but still only 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 960 @ 600 MHz256 Bit @ 3600 MHz
GeForce GTX 675M (compare) 384 @ 620 MHz256 Bit @ 3000 MHz
GeForce GTX 670MX (compare) 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 Speed3600 MHz
Memory Bus Width256 Bit
Memory TypeGDDR5
Shared Memoryno
DirectXDirectX 11, Shader 5.0
Transistor Count3540 Million
technology28 nm
FeaturesOptimus, PhysX, Verde Drivers, CUDA, 3D Vision, 3DTV Play
Notebook Sizelarge
Date of Announcement01.10.2012
Link to Manufacturer Page


3DMark - Ice Storm Standard Graphics 1280x720
136430 Points (18%)
3DMark 11 - Performance 1280x720
min: 4255     avg: 4265.5     median: 4265 (12%)     max: 4276 points
3DMark 11 - Performance GPU 1280x720
min: 3959     avg: 3978.5     median: 3978 (8%)     max: 3998 points
3DMark Vantage
P Result 1280x1024 +
P GPU no PhysX 1280x1024 +
3DMark 03 - Standard 1024x768
57389 Points (30%)
3DMark 05 - Standard 1024x768
29194 Points (55%)
3DMark 06 Standard 1280x1024 +
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
40.9 fps (15%)
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
54.2 fps (23%)
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
59  fps    + Compare
high 1366x768
52.1  fps    + Compare
ultra 1920x1080
39.7  fps    + Compare
» With all tested laptops playable in detail settings ultra.


low 1024x768
55  fps    + Compare
med. 1366x768
46.6  fps    + Compare
high 1366x768
41  fps    + Compare
ultra 1920x1080
23.4  fps    + Compare
» With all tested laptops playable in detail settings high.
low 1024x768
61.4  fps    + Compare
med. 1366x768
59.4  fps    + Compare
high 1366x768
39.8  fps    + Compare
ultra 1920x1080
21  fps    + Compare
» With all tested laptops playable in detail settings high.
low 1024x768
83.1  fps    + Compare
med. 1366x768
39  fps    + Compare
high 1366x768
21.3  fps    + Compare
ultra 1920x1080
13.7  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
76.5  fps    + Compare
med. 1366x768
74.3  fps    + Compare
high 1366x768
44.8  fps    + Compare
ultra 1920x1080
25.8  fps    + Compare