NVIDIA GeForce GTX 470M SLI

NVIDIA GeForce GTX 470M SLI

The NVIDIA GeForce GTX 470M SLI is a high-end graphics solution for laptops based on two GeForce GTX 470M graphic cards in SLI mode. Each card usually renders a single frame in an alternating manner. 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). Each single GTX 470M is based on the GF104 core and therefore supports DirectX1 11 and OpenGL 4.0.

GF104 architecture

The GF104 core of the GTX 470M is related to the GF100 core of the GeFore GTX 480M that offers 384 shaders and a 256 Bit memory bus for GDDR5. The GTX 470M, however, offers only 288 cores of the 384 and a 192 Bit memory bus. The architecture of the GF104 is not comparable to the old GT215 (e.g., GeForce GTS 350M) or G92b (e.g., GeForce GTX 285M) cores.  

Unlike the GF100, the smaller GF104, GF106, and GF108 cores were shortened and considerably modified. In contrast to the GF100, which was designed for professional applications, these chips target the consumer market. They feature more shaders (3x16 instead of 2x16), more texture units (8 instead of 4) and SFUs per streaming multi-processor (SM). As there are still only 2 warp schedulers (versus 3 shader groups), Nvidia now uses superscalar execution to use the higher amount of shaders per SM more efficiently. In theory, the shaders can therefore be utilized more efficiently and the performance per core is improved. 

However, in worst case scenarios the performance can also be worse than that of the GF100 (and its predecessors). The ECC memory protection, which is important for professional applications, was completely omitted and the FP64 hardware was shortened (only 1/3 of the shader are FP64-capable and therefore only 1/12 of the performance of the FP32). Because of these cutbacks, the size of the SM  grew only by 25% despite the higher number of shaders and larger warp schedulers with superscalar dispatch capabilities. Due to the different shader architectures and the higher clock rate of the shader domain, the core count can not be directly compared to AMD cores of the Radeon 5000 series (e.g. HD 5850).

Detailed information on the GF104 architecture (and by extension also the GF106 and GF108) can be found in the desktop GTX 460 article by Anandtech.

Performance

The performance of the GTX 470M SLI combination should be similar to the GTX 480M SLI due to the high-clocked GTX470M cards. Generally, the SLI gain depends on the used application/game and the driver support. Currently, the SLI driver support from Nvidia is better than the Crossfire support from AMD, leading to higher gains. About 30% more performance is gained on average compared to a single GTX 470M (in high resolutions and with Anti-Aliasing). Therefore, all games from 2010 except Metro 2033 should be playable in the highest detail settings. Metro 2033 only ran with 23 fps in our tests with a GTX 480M SLI system and should therefore score similar on the GTX 470M SLI combination.

Features

A novelty of the GF104/106/108 chips is the support of Bitstream HD Audio (Blu-Ray) output via HDMI. Similar to the Radeon HD 5850, the GTX 470M can transfer Dolby True HD and DTS-HD bitstream without quality loss to a HiFi receiver.

The GTX470M offers the PureVideo HD technology for video decoding. The included Video Processor 4 (VP4) supports feature set C and therefore the GPU is able to fully decode MPEG-1, MPEG-2, MPEG-4 Part 2 (MPEG-4 ASP - e.g., DivX or Xvid), VC-1/WMV9, and H.264 (VLD, IDCT, Motion Compensation, and Deblocking). The X500 tester was able to decode the VC-1 encoded Elephants Dream video with about 3-6% CPU load (according to the task manager). The H.264-encoded Big Buck Bunny video was played back with 1-3% CPU load (both 1080p videos).

Furthermore, the GPU is able to decode two 1080p streams simultaneously (e.g. for Blu-Ray Picture-in-Picture).

Through CUDA, OpenCL and DirectCompute 2.1 support, the GeForce GTX 470M can assist in general calculations. For example, the stream processor can  encode videos considerably faster than certain high-end CPUs. Furthermore, physics calculations can be done by the GPU using PhysX (e.g. supported by Mafia 2 or Metro 2033). SLI systems can also dedicate a single card for PhysX calculations.

According to Nvidia, support for 3D Vision on the GTX graphics cards is also new. It enables the laptop to send 3D contents (3D games, 3D Web Streaming, 3D photos, 3D Blu-Rays) to a built-in 3D enabled screen or an external 3D TV (only if supported by the laptop manufacturer).

Unofficially, the power consumption of the GeForce GTX 470M should be about 75 Watt (TDP including the MXM board and memory), which is about the level of the Mobility Radeon HD 5870. Therefore, the SLI system needs 2x75 Watt and therefore a lot less than the GTX 480M SLI with 2x100W. Without load, the chip is clocked at 50/100 MHz (chip/shader) in 2D respectively 200/400 in 3D mode to save power.

Compared to desktop graphics cards, the GTX 470M SLI combination is most similar in performance to a GTS 450 SLI combo, as the desktop GTX 470 is significantly faster.

ManufacturerNVIDIA
GeForce GTX 400M Series

GeForce GTX 485M SLI

768 @ 575MHz256 Bit @ 1500MHz
GeForce GTX 470M SLI 576 @ 535MHz192 Bit @ 1250MHz

GeForce GTX 480M SLI

704 @ 425MHz256 Bit @ 1200MHz

GeForce GTX 460M SLI

384 @ 675MHz192 Bit @ 1250MHz

GeForce GTX 485M

384 @ 575MHz256 Bit @ 1500MHz

GeForce GTX 470M

288 @ 535MHz192 Bit @ 1250MHz

GeForce GTX 480M

352 @ 425MHz256 Bit @ 1200MHz

GeForce GTX 460M

192 @ 675MHz192 Bit @ 1250MHz
CodenameN11E-GT
ArchitectureFermi
Pipelines576 - unified
Core Speed *535 MHz
Shader Speed *1070 MHz
Memory Speed *1250 MHz
Memory Bus Width192 Bit
Memory TypeGDDR5
Shared Memoryno
DirectXDirectX 11, Shader 5.0
technology40 nm
Notebook Sizelarge
Date of Announcement01.11.2010
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

3DMark 11 - Performance GPU 1280x720
0% 100%
min: 4070      avg: 4070 (25%)     median: 4070 (25%)     max: 4070 points
3DMark 11 - Performance 1280x720
0% 100%
min: 4076      avg: 4076 (31%)     median: 4076 (31%)     max: 4076 points
3DMark Vantage - P GPU no PhysX 1280x1024
0% 100%
min: 16161      avg: 16233.5 (35%)     median: 16233.5 (35%)     max: 16306 Points
3DMark Vantage - P Result no PhysX 1280x1024
0% 100%
min: 16802      avg: 16802 (43%)     median: 16802 (43%)     max: 16802 Points
3DMark 06
0% 100%
min: 19368      avg: 20607.5 (69%)     median: 20607.5 (69%)     max: 21847 Points
3DMark 05 - Standard 1024x768
0% 100%
min: 25241      avg: 25241 (68%)     median: 25241 (68%)     max: 25241 Points
3DMark 03 - Standard 1024x768
0% 100%
min: 69012      avg: 69012 (46%)     median: 69012 (46%)     max: 69012 Points
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
0% 100%
min: 57.1      avg: 57.1 (31%)     median: 57.1 (31%)     max: 57.1 fps
PCMark Vantage - Gaming Score 1024x768
0% 100%
min: 15926      avg: 15926 (61%)     median: 15926 (61%)     max: 15926 Points
SPECviewperf 11 - Siemens NX 1920x1080
0% 100%
min: 2      avg: 2 (3%)     median: 2 (3%)     max: 2 fps
SPECviewperf 11 - Tcvis 1920x1080
0% 100%
min: 0.68      avg: 0.7 (1%)     median: 0.7 (1%)     max: 0.68 fps
SPECviewperf 11 - SolidWorks 1920x1080
0% 100%
min: 5.64      avg: 5.6 (9%)     median: 5.6 (9%)     max: 5.64 fps
SPECviewperf 11 - Pro/ENGINEER 1920x1080
0% 100%
min: 1.24      avg: 1.2 (7%)     median: 1.2 (7%)     max: 1.24 fps
SPECviewperf 11 - Maya 1920x1080
0% 100%
min: 6.12      avg: 6.1 (5%)     median: 6.1 (5%)     max: 6.12 fps
SPECviewperf 11 - Lightwave 1920x1080
0% 100%
min: 9.11      avg: 9.1 (11%)     median: 9.1 (11%)     max: 9.11 fps
SPECviewperf 11 - Ensight 1920x1080
0% 100%
min: 19.06      avg: 19.1 (24%)     median: 19.1 (24%)     max: 19.06 fps
SPECviewperf 11 - Catia 1920x1080
0% 100%
min: 3.63      avg: 3.6 (5%)     median: 3.6 (5%)     max: 3.63 fps
Cinebench R11.5 - OpenGL 64Bit
0% 100%
min: 40.38      avg: 40.4 (37%)     median: 40.4 (37%)     max: 40.38 Points
Cinebench R10 - Shading 32Bit
0% 100%
min: 5348      avg: 5348 (44%)     median: 5348 (44%)     max: 5348 Points
Windows 7 Experience Index - Gaming graphics
0% 100%
min: 7.8      avg: 7.8 (99%)     median: 7.8 (99%)     max: 7.8 points
Windows 7 Experience Index - Graphics
0% 100%
min: 7.8      avg: 7.8 (99%)     median: 7.8 (99%)     max: 7.8 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.

Call of Duty: Black Ops
low 800x600
83.5 fps  fps      Compare
med. 1024x768
77.3 fps  fps      Compare
high 1360x768
77.3 fps  fps      Compare
ultra 1920x1080
61.4 fps  fps      Compare
» With all tested laptops playable in detail settings ultra.
Fifa 11

Fifa 11

2010
low 800x600
539.4  fps      Compare
med. 1024x768
336  fps      Compare
high 1360x768
242  fps      Compare
ultra 1920x1080
151.2  fps      Compare
» With all tested laptops playable in detail settings ultra.
Mafia 2

Mafia 2

2010
low 800x600
124.4  fps      Compare
med. 1024x768
114  fps      Compare
high 1360x768
103.9  fps      Compare
ultra 1920x1080
76.6  fps      Compare
» With all tested laptops playable in detail settings ultra.
StarCraft 2
low 1024x768
280 fps  fps      Compare
med. 1360x768
83.3 fps  fps      Compare
high 1360x768
73.9 fps  fps      Compare
ultra 1920x1080
50.3 fps  fps      Compare
» With all tested laptops playable in detail settings ultra.
Metro 2033
low 800x600
136 fps  fps      Compare
med. 1360x768
108.1 fps  fps      Compare
high 1600x900
65.5 fps  fps      Compare
ultra 1920x1080
23 fps  fps      Compare
» With all tested laptops playable in detail settings high.
Battlefield: Bad Company 2
low 1024x768
152.5 fps  fps      Compare
med. 1366x768
134.5 fps  fps      Compare
high 1366x768
114.9 fps  fps      Compare
ultra 1920x1080
69.2 fps  fps      Compare
» With all tested laptops playable in detail settings ultra.
CoD Modern Warfare 2
low 800x600
276.5 fps  fps      Compare
med. 1024x768
163.9 fps  fps      Compare
high 1366x768
150.2 fps  fps      Compare
ultra 1920x1080
104.4 fps  fps      Compare
» With all tested laptops playable in detail settings ultra.
Risen

Risen

2009
low 800x600
154 fps  fps      Compare