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GeForce GTX 285 1GB vs GeForce GTX 850M

Intro

The GeForce GTX 285 1GB makes use of a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 RAM runs at a frequency of 1242 MHz on this particular model. It features 240 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 850M, which makes use of a 28 nm design. nVidia has clocked the core speed at 876 MHz. The DDR3 RAM is set to run at a frequency of 1000 MHz on this model. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 164 Watts (410%)

Memory Bandwidth

In theory, the GeForce GTX 285 1GB is 397% quicker than the GeForce GTX 850M in general, because of its higher bandwidth. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 126976 (397%)

Texel Rate

The GeForce GTX 285 1GB should be much (about 48%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 16800 (48%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 1GB is the winner, and very much so. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
GeForce GTX 850M 14016 Mpixels/sec
Difference: 6720 (48%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce GTX 285 1GB

Amazon.com

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GeForce GTX 850M

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 285 1GB GeForce GTX 850M
Manufacturer nVidia nVidia
Year January 15, 2009 March 12 2014
Code Name G200b GM107
Memory 1024 MB 2048 MB
Core Speed 648 MHz 876 MHz
Memory Speed 2484 MHz 2000 MHz
Power (Max TDP) 204 watts 40 watts
Bandwidth 158976 MB/sec 32000 MB/sec
Texel Rate 51840 Mtexels/sec 35040 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 14016 Mpixels/sec
Unified Shaders 240 640
Texture Mapping Units 80 40
Render Output Units 32 16
Bus Type GDDR3 DDR3
Bus Width 512-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 1400 million (Unknown) million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 285 1GB

Amazon.com

Check prices at:

GeForce GTX 850M

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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