NVIDIA GeForce GTX 285M SLI vs NVIDIA GeForce GTX 285M

NVIDIA GeForce GTX 285M SLI

► remove NVIDIA GeForce GTX 285M SLI

The Nvidia GeForce GTX 285M SLI is a graphics solution that combines two Nvidia GeForce GTX 285M with an SLI connection. As not every game supports SLI efficiently, the performance increase compared to a single card is only about 0-40%. The most frequently used technique is Alternate Frame Rendering (AFR), where each card take turns rendering a frame in an alternating manner. Therefore, the SLI solution may suffer from noticeable micro stuttering at frame-rates between 20-30 fps (due to display irregularities between each rendered frame).

Each of the two GeForce GTX 285M is based on the G92b core and is therefore produced in 55nm. It features the full 128 pipelines of the G92b core and is therefore comparable to the desktop 9800M GTX+ and not the desktop GTX 280.

The Nvidia GeForce GTX 285M SLI in laptops with Core 2 Duo CPUs is bundled with the GeForce 9400M G chipset and therefore supports HybridPower (if the manufacturer enables it). With HybridPower, both GTX cards can be disabled and only the chipset graphics core can run, leading to improved battery life (and possibly less fan noise). Modern Core i7 laptops are using an Intel chipset and do not support HybridPower.

Since there are two GTX 285M cards active in SLI, the electrical current consumption and exhumed heat are about twice as much as what a single GTX 285M can produce. Due to the large power and cooling requirements, this SLI combination can only be found in large DTR laptops (like the Alienware M17x).

NVIDIA GeForce GTX 285M

► remove NVIDIA GeForce GTX 285M

The NVIDIA GeForce GTX 285M is a high-end graphic card of the 200M series based on the G92b core and most similar to the Desktop GeForce 9800 GTX+. Therefore the 285M cannot be directly compared to the Desktop GTX 285. The chip is produced in a 55nm fabrication process, which is a step up from the 65nm process of the GTX 9800M. Its 128 pipelines are all enabled as well, as opposed to only 112 pipelines of the GTX 9800M. Compared to the GTX 280M, the GTX 285M features a slightly higher clock speed and is therefore only marginally faster (3-6% on average).

An innovation in the 200M series is the much accelerated switch times if using Hybrid Power (lower than 1 second compared to 7 seconds at the 9800M GTX).

Similar to all other cards with native DirectX 10 capabilities, the GeForce GTX 285M renders 3D images using "Unified Shaders". In other words, there are no longer any more dedicated pixel shaders or vertex shaders. Instead, new stream processors (128 of them in the 285M) now process most of the heavy graphics loading that would have otherwise been done by dedicated pixel and vertex shaders. In fact, the shader units are clocked higher than the core chip itself.

As previously mentioned, the GTX 285M is about 3-6% faster than the GTX280M due to slightly higher clock speeds. This means that notebooks equipped with the GTX 285M should run all modern and demanding games (as of 2009) in high details and resolutions. Only very demanding games, like Crysis Warhead or Metro 2033, may become unplayable if at maximum graphical settings.

Games with PhysX support (e.g., Mirror's Edge) may benefit from improved performance out of the 285M. Still, the Mobility Radeon HD 5870 is arguably a faster and better value single core GPU for laptops.

An advantage of the GeForce GTX 285M is the integrated PureVideo HD video processor (VP2). With this software feature, the 285M can assist the CPU in the decoding of H.264-, VC-1-, MPEG2- or WMV9 videos. 

HybridPower is an Nvidia power-saving technology for Windows Vista used for switching between integrated and dedicated graphics cards. In the future, Nvidia wants this switch to occur automatically with drivers (now known as Optimus). GeForceBoost is not supported with the 285M, as there would be no performance gain in combining the integrated GPU with the dedicated video card.  

The power consumption can be up to 75 Watts (if including the MXM board and VRAM). As a result, the 285M is usually reserved for larger desktop replacement (DTR) laptops with powerful cooling solutions.

In June 2010, the GeForce GTX 480M (mobile Fermi) was announced with a revamped architecture compared to the GTX 285M. Compared to the 285M, the Fermi core will support DirectX 11 and offer better performance at the cost of higher power consumption levels and possibly higher heat output. 

If compared to desktop graphics cards, the performance of the 285M can be considered somewhere in between the 9800 GT and the 9800 GTX, the latter of which is clocked considerably higher (675/1675/1100 MHz) in comparison.

NVIDIA GeForce GTX 285M SLINVIDIA GeForce GTX 285M
ManufacturerNVIDIANVIDIA
GeForce GTX 200M Series
GeForce GTX 285M SLI 256 @ 576 MHz256 Bit @ 1020 MHz
GeForce GTX 280M SLI (compare) 256 @ 585 MHz256 Bit @ 950 MHz
GeForce GTX 260M SLI (compare) 224 @ 550 MHz256 Bit @ 950 MHz
GeForce GTX 285M 128 @ 576 MHz256 Bit @ 1020 MHz
GeForce GTX 280M (compare) 128 @ 585 MHz256 Bit @ 950 MHz
GeForce GTX 260M (compare) 112 @ 550 MHz256 Bit @ 950 MHz
GeForce GTX 285M SLI 256 @ 576 MHz256 Bit @ 1020 MHz
GeForce GTX 280M SLI (compare) 256 @ 585 MHz256 Bit @ 950 MHz
GeForce GTX 260M SLI (compare) 224 @ 550 MHz256 Bit @ 950 MHz
GeForce GTX 285M 128 @ 576 MHz256 Bit @ 1020 MHz
GeForce GTX 280M (compare) 128 @ 585 MHz256 Bit @ 950 MHz
GeForce GTX 260M (compare) 112 @ 550 MHz256 Bit @ 950 MHz
CodenameN10E-GTXN10E-GTX1
ArchitectureG9xG9x
256 - 128 -
Core576 MHz576 MHz
Shader1500 MHz1500 MHz
Memory1020 MHz1020 MHz
Bus256 Bit256 Bit
MemoryGDDR3GDDR3
Max. Memory2048 (2x1024) MB1024 MB
nono
DirectXDirectX 10, 4.0DirectX 10, 4.0
Transistors1508 Million754 Million
Technology55 nm55 nm
FeaturesHybridPower, PureVideo HD, CUDA, PhysX readyHybridPower, PureVideo HD (VP2), CUDA, PhysX ready
Size
Introduced02.03.2009 02.03.2009
MXM 3MXM 3
Manufacturerhttp://www.nvidia.com/object/product_gef...http://www.nvidia.com/object/product_gef...

3DMark Vantage
P Result 1280x1024 + NVIDIA GeForce GTX 285M SLI
P Result 1280x1024 + NVIDIA GeForce GTX 285M
P GPU no PhysX 1280x1024 + NVIDIA GeForce GTX 285M SLI
P GPU no PhysX 1280x1024 + NVIDIA GeForce GTX 285M
3DMark 03 - Standard 1024x768
37372 Points (20%)
3DMark 05 - Standard 1024x768
21611 Points (46%)
min: 18935     avg: 18964.5     median: 18964.5 (41%)     max: 18994 Points
3DMark 06 + NVIDIA GeForce GTX 285M SLI
Standard 1280x1024 + NVIDIA GeForce GTX 285M
Windows 7 Experience Index - Gaming graphics
7.3 points (92%)
min: 6.8     avg: 7.1     median: 7.1 (89%)     max: 7.3 points
Windows 7 Experience Index - Graphics
7.3 points (92%)
min: 6.8     avg: 7.1     median: 7.1 (89%)     max: 7.3 points
Cinebench R10 Shading 32Bit + NVIDIA GeForce GTX 285M SLI
Shading 32Bit + NVIDIA GeForce GTX 285M
Cinebench R11.5 OpenGL 64Bit + NVIDIA GeForce GTX 285M SLI
OpenGL 64Bit + NVIDIA GeForce GTX 285M

Average Benchmarks NVIDIA GeForce GTX 285M SLI → 100%

Average Benchmarks NVIDIA GeForce GTX 285M → 88%

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-
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

Mafia 2

Mafia 2

2010
low 800x600
GeForce GTX 285M:
54.9 fps  fps
med. 1024x768
GeForce GTX 285M:
53.8 fps  fps
high 1360x768
GeForce GTX 285M:
52.2 fps  fps
ultra 1920x1080
GeForce GTX 285M:
36.9 fps  fps
GeForce GTX 285M:
»
low 1024x768
GeForce GTX 285M:
184 fps  fps
ultra 1920x1080
GeForce GTX 285M:
32.8 fps  fps
GeForce GTX 285M:
»
low 800x600
GeForce GTX 285M:
66.3 fps  fps
med. 1360x768
GeForce GTX 285M:
40.8 fps  fps
high 1600x900
GeForce GTX 285M:
21.4 fps  fps
ultra 1920x1080
GeForce GTX 285M:
13.7 fps  fps
GeForce GTX 285M:
»
high 1366x768
100%
GeForce GTX 285M SLI:
81.5  fps
58%
GeForce GTX 285M:
47.2  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
50.6  fps
51%
GeForce GTX 285M:
26  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
med. 1024x768
100%
GeForce GTX 285M SLI:
118.1  fps
59%
GeForce GTX 285M:
70  fps
high 1366x768
100%
GeForce GTX 285M SLI:
113.9  fps
54%
GeForce GTX 285M:
61.2  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
84.3  fps
51%
GeForce GTX 285M:
43.3  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Risen

Risen

2009
med. 1024x768
100%
GeForce GTX 285M SLI:
103.5  fps
57%
GeForce GTX 285M:
59.2  fps
high 1366x768
100%
GeForce GTX 285M SLI:
84.7  fps
51%
GeForce GTX 285M:
43.4  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
58  fps
52%
GeForce GTX 285M:
30.3  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Need for Speed Shift

Need for Speed Shift

2009
med. 1024x768
100%
GeForce GTX 285M SLI:
86.2  fps
88%
GeForce GTX 285M:
75.8  fps
high 1366x768
100%
GeForce GTX 285M SLI:
85.3  fps
77%
GeForce GTX 285M:
65.3  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
79.8  fps
48%
GeForce GTX 285M:
38.6  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Colin McRae: DIRT 2

Colin McRae: DIRT 2

2009
med. 1024x768
100%
GeForce GTX 285M SLI:
127.1  fps
78%
GeForce GTX 285M:
99.3  fps
high 1360x768
100%
GeForce GTX 285M SLI:
103.7  fps
64%
GeForce GTX 285M:
66.2  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
69.9  fps
47%
GeForce GTX 285M:
32.9  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Anno 1404

Anno 1404

2009
ultra 1280x1024
100%
GeForce GTX 285M SLI:
89.4  fps
52%
GeForce GTX 285M:
46.7  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
F.E.A.R. 2

F.E.A.R. 2

2009
high 1280x1024
100%
GeForce GTX 285M SLI:
127.5  fps
70%
GeForce GTX 285M:
89.2  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
87.7  fps
54%
GeForce GTX 285M:
47.6  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Crysis - GPU Benchmark

Crysis - GPU Benchmark

2007
med. 1024x768
100%
GeForce GTX 285M SLI:
74.2  fps
high 1024x768
100%
GeForce GTX 285M SLI:
62  fps
81%
GeForce GTX 285M:
50.3  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
26.9  fps
52%
GeForce GTX 285M:
13.9  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
Crysis - CPU Benchmark

Crysis - CPU Benchmark

2007
med. 1024x768
100%
GeForce GTX 285M SLI:
73.9  fps
high 1024x768
100%
GeForce GTX 285M SLI:
59.3  fps
78%
GeForce GTX 285M:
46.4  fps
ultra 1920x1080
100%
GeForce GTX 285M SLI:
24.9  fps
52%
GeForce GTX 285M:
13  fps
GeForce GTX 285M SLI:
»
GeForce GTX 285M:
»
World in Conflict - Benchmark

World in Conflict - Benchmark

2007
low 800x600
GeForce GTX 285M:
126 fps  fps
med. 1024x768
GeForce GTX 285M:
84 fps  fps
high 1024x768
GeForce GTX 285M:
53 fps  fps
GeForce GTX 285M:
»
Call of Juarez Benchmark

Call of Juarez Benchmark

2006
high 1024x768
GeForce GTX 285M:
36.5 fps  fps
GeForce GTX 285M:
»

Average Gaming NVIDIA GeForce GTX 285M SLI → 100%

Average Gaming NVIDIA GeForce GTX 285M → 61%

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