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GeForce 920M vs GeForce GTX 285 1GB

Intro

The GeForce 920M makes use of a 28 nm design. nVidia has clocked the core frequency at 954 MHz. The DDR3 memory runs at a frequency of 900 MHz on this specific model. It features 384 SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Compare all of that to the GeForce GTX 285 1GB, which uses a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 memory runs at a frequency of 1242 MHz on this particular model. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 285 1GB should be 1004% faster than the GeForce 920M in general, because of its higher bandwidth. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce 920M 14400 MB/sec
Difference: 144576 (1004%)

Texel Rate

The GeForce GTX 285 1GB will be quite a bit (about 70%) faster with regards to AF than the GeForce 920M. (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
GeForce 920M 30528 Mtexels/sec
Difference: 21312 (70%)

Pixel Rate

The GeForce GTX 285 1GB is much (about 172%) faster with regards to full screen anti-aliasing than the GeForce 920M, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
GeForce 920M 7632 Mpixels/sec
Difference: 13104 (172%)

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 920M

Amazon.com

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GeForce GTX 285 1GB

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 920M GeForce GTX 285 1GB
Manufacturer nVidia nVidia
Year March 12 2015 January 15, 2009
Code Name GK208 G200b
Memory 2048 MB 1024 MB
Core Speed 954 MHz 648 MHz
Memory Speed 1800 MHz 2484 MHz
Power (Max TDP) (Unknown) watts 204 watts
Bandwidth 14400 MB/sec 158976 MB/sec
Texel Rate 30528 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 7632 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 384 240
Texture Mapping Units 32 80
Render Output Units 8 32
Bus Type DDR3 GDDR3
Bus Width 64-bit 512-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 1400 million
Bus PCIe 3.0 x16 PCIe x16 2.0
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 920M

Amazon.com

Check prices at:

GeForce GTX 285 1GB

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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