NVIDIA GeForce GTX 670MX SLI

The NVIDIA GeForce GTX 670MX SLI is a high-end DirectX 11-compatible graphics card for laptops, consisting of two GeForce GTX 670MX. Each card has a 28nm GK104 core based on the Kepler architecture. With SLI, each card usually renders a single frame (AFR mode). Therefore, it may suffer from micro stuttering in low fps ranges of 30fps. This happens because of different timespans between two frames (e.g., irregular delays between sequential frames).

Architecture

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 5 blocks are active leading to the 960 CUDA cores. Although more shader cores are available in the Kepler architecture as compared to the Fermi design, the Kepler shaders are still expected to 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.

Performance

The graphics performance of the GeForce GTX 670MX SLI depends on the driver support of the benchmark / game. Ideally it can be up to twice as fast as a single GTX 670MX, ranking it as one of the fastest mobile graphics solution for laptops in 2012. The performance should be on average similar to a single GTX 680M, but with the problems of micro stuttering (see above) and a higher power consumption. The GPUs have enough power to run games of 2012 fluently with Full HD resolution, maxed out graphical settings and antialiasing. Even extremely demanding titles like Metro 2033, Alan Wake or Risen 2 are playable at the highest detail settings.

Features

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.

Power Consumption

The power consumption of the GeForce GTX 670MX SLI should double compared to a single GTX 670MX. Therefore, only large desktop replacements can handle the heat.

ManufacturerNVIDIA
GeForce GTX 600M Series

GeForce GTX 680M SLI

2688 @ 720 MHz256 Bit @ 3600 MHz

GeForce GTX 680MX

1536 @ 720 MHz256 Bit @ 5000 MHz

GeForce GTX 675M SLI

768 @ 620 MHz256 Bit @ 3000 MHz

GeForce GTX 680M

1344 @ 720 MHz256 Bit @ 3600 MHz
GeForce GTX 670MX SLI 1920 @ 600 MHz192 Bit @ 2800 MHz

GeForce GTX 675MX

960 @ 600 MHz256 Bit @ 3600 MHz

GeForce GTX 675M

384 @ 620 MHz256 Bit @ 3000 MHz

GeForce GTX 670MX

960 @ 600 MHz192 Bit @ 2800 MHz

GeForce GTX 670M

336 @ 598 MHz192 Bit @ 3000 MHz

GeForce GTX 660M

384 @ 835 MHz128 Bit @ 4000 MHz
CodenameN13E-GR
ArchitectureKepler
Pipelines1920 - unified
Core Speed *600 MHz
Memory Speed *2800 MHz
Memory Bus Width192 Bit
Memory TypeGDDR5
Shared Memoryno
DirectXDirectX 11, Shader 5.1
Transistors5080 Million
technology28 nm
FeaturesOptimus, SLI, PhysX, Verde Drivers, CUDA, 3D Vision, 3DTV Play
Notebook Sizelarge
Date of Announcement01.10.2012
Link to Manufacturer Pagehttp://www.geforce.com/hardware/notebook...
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
0% 100%
min: 66.1      avg: 66.1 (45%)     median: 66.1 (45%)     max: 66.1 fps
3DMark 11 - Performance GPU 1280x720
0% 100%
min: 7042      avg: 7042 (44%)     median: 7042 (44%)     max: 7042 points
3DMark 11 - Performance 1280x720
0% 100%
min: 6459      avg: 6459 (49%)     median: 6459 (49%)     max: 6459 points
3DMark Vantage - P GPU no PhysX 1280x1024
0% 100%
min: 23936      avg: 23936 (52%)     median: 23936 (52%)     max: 23936 Points
3DMark Vantage - P Result no PhysX 1280x1024
0% 100%
min: 23526      avg: 23526 (61%)     median: 23526 (61%)     max: 23526 Points
3DMark 06
0% 100%
min: 23606      avg: 23606 (79%)     median: 23606 (79%)     max: 23606 Points
3DMark 05 - Standard 1024x768
0% 100%
min: 29851      avg: 29851 (81%)     median: 29851 (81%)     max: 29851 Points
3DMark 03 - Standard 1024x768
0% 100%
min: 78213      avg: 78213 (52%)     median: 78213 (52%)     max: 78213 Points
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
0% 100%
min: 87.2      avg: 87.2 (47%)     median: 87.2 (47%)     max: 87.2 fps
PCMark Vantage - Gaming Score 1024x768
0% 100%
min: 16615      avg: 16615 (64%)     median: 16615 (64%)     max: 16615 Points
SPECviewperf 11 - Siemens NX 1920x1080
0% 100%
min: 1.66      avg: 1.7 (3%)     median: 1.7 (3%)     max: 1.66 fps
SPECviewperf 11 - Tcvis 1920x1080
0% 100%
min: 0.77      avg: 0.8 (1%)     median: 0.8 (1%)     max: 0.77 fps
SPECviewperf 11 - SolidWorks 1920x1080
0% 100%
min: 8.39      avg: 8.4 (13%)     median: 8.4 (13%)     max: 8.39 fps
SPECviewperf 11 - Pro/ENGINEER 1920x1080
0% 100%
min: 1.14      avg: 1.1 (6%)     median: 1.1 (6%)     max: 1.14 fps
SPECviewperf 11 - Maya 1920x1080
0% 100%
min: 10.24      avg: 10.2 (9%)     median: 10.2 (9%)     max: 10.24 fps
SPECviewperf 11 - Lightwave 1920x1080
0% 100%
min: 14.49      avg: 14.5 (18%)     median: 14.5 (18%)     max: 14.49 fps
SPECviewperf 11 - Ensight 1920x1080
0% 100%
min: 14.31      avg: 14.3 (18%)     median: 14.3 (18%)     max: 14.31 fps
SPECviewperf 11 - Catia 1920x1080
0% 100%
min: 6.23      avg: 6.2 (9%)     median: 6.2 (9%)     max: 6.23 fps
Cinebench R11.5 - OpenGL 64Bit
0% 100%
min: 46.69      avg: 46.7 (43%)     median: 46.7 (43%)     max: 46.69 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.

Far Cry 3

Far Cry 3

2012
low 1024x768
107.7  fps      Compare
med. 1366x768
97.7  fps      Compare
high 1366x768
72.1  fps      Compare
ultra 1920x1080
27  fps      Compare
» With all tested laptops playable in detail settings high.
Assassin´s Creed III
med. 1366x768
57.7  fps      Compare
high 1366x768
55.7  fps      Compare
ultra 1920x1080
31.2  fps      Compare
» With all tested laptops playable in detail settings high.
Hitman: Absolution
low 1024x768
67.6  fps      Compare
med. 1366x768
62.7  fps      Compare
high 1366x768
53.3  fps      Compare
ultra 1920x1080
24.7  fps      Compare
» With all tested laptops playable in detail settings high.
Call of Duty: Black Ops 2
low 1024x768
185.9  fps      Compare
med. 1366x768
171.7  fps      Compare
high 1366x768
124.4  fps      Compare
ultra 1920x1080
85.7  fps      Compare
» With all tested laptops playable in detail settings ultra.
Need for Speed: Most Wanted
low 1024x768
59.6  fps      Compare
med. 1366x768
59.4  fps      Compare
high 1366x768
48.8  fps      Compare
ultra 1920x1080
29  fps      Compare
» With all tested laptops playable in detail settings high.
Medal of Honor: Warfighter
low 1024x768
151.3  fps      Compare
med. 1366x768
128.9  fps      Compare
high 1366x768
113.2  fps      Compare
ultra 1920x1080
47.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
Dishonored
low 1024x768
129  fps      Compare
med. 1366x768
129.3  fps      Compare
high 1366x768
129.4  fps      Compare
ultra 1920x1080
126.6  fps      Compare
» With all tested laptops playable in detail settings ultra.
World of Tanks v8
low 1024x768
113.7  fps      Compare
med. 1366x768
43.8  fps      Compare
high 1366x768
51.9  fps      Compare
ultra 1920x1080
33  fps      Compare
» With all tested laptops playable in detail settings high.
Fifa 13

Fifa 13

2012
low 1024x768
361.2  fps      Compare
med. 1366x768
331.6  fps      Compare
high 1366x768
315.4  fps      Compare
ultra 1920x1080
207.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
F1 2012

F1 2012

2012
low 1024x768
124  fps      Compare
med. 1366x768
102  fps      Compare
high 1366x768
98  fps      Compare
ultra 1920x1080
79  fps      Compare
» With all tested laptops playable in detail settings ultra.
Borderlands 2
low 1024x768
117.8  fps      Compare
med. 1366x768
112.6  fps      Compare
high 1366x768
104.2  fps      Compare
ultra 1920x1080
78.9  fps      Compare
» With all tested laptops playable in detail settings ultra.
Guild Wars 2
low 1024x768
85.4  fps      Compare
high 1366x768
45.8  fps      Compare
ultra 1920x1080
35.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
Counter-Strike: GO
low 1024x768
232.7  fps      Compare