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GeForce GTX 280 vs GeForce GTX 285 2GB

Intro

The GeForce GTX 280 has clock speeds of 602 MHz on the GPU, and 1107 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Compare all that to the GeForce GTX 285 2GB, which makes use of a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 memory works at a frequency of 1242 MHz on this specific card. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB 204 Watts
GeForce GTX 280 236 Watts
Difference: 32 Watts (16%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 2GB should be a small bit faster than the GeForce GTX 280 overall. (explain)

GeForce GTX 285 2GB 158976 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 17280 (12%)

Texel Rate

The GeForce GTX 285 2GB will be just a bit (approximately 8%) faster with regards to texture filtering than the GeForce GTX 280. (explain)

GeForce GTX 285 2GB 51840 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 3680 (8%)

Pixel Rate

The GeForce GTX 285 2GB will be a little bit (about 8%) faster with regards to anti-aliasing than the GeForce GTX 280, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 285 2GB 20736 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 1472 (8%)

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 280

Amazon.com

Check prices at:

GeForce GTX 285 2GB

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.

Specifications

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Model GeForce GTX 280 GeForce GTX 285 2GB
Manufacturer nVidia nVidia
Year June 17, 2008 January 15, 2009
Code Name G200 G200b
Memory 1024 MB 2048 MB
Core Speed 602 MHz 648 MHz
Memory Speed 2214 MHz 2484 MHz
Power (Max TDP) 236 watts 204 watts
Bandwidth 141696 MB/sec 158976 MB/sec
Texel Rate 48160 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 240 240
Texture Mapping Units 80 80
Render Output Units 32 32
Bus Type GDDR3 GDDR3
Bus Width 512-bit 512-bit
Fab Process 65 nm 55 nm
Transistors 1400 million 1400 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.1 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be processed per second. This figure is worked out by multiplying the total number of texture units 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 280

Amazon.com

Check prices at:

GeForce GTX 285 2GB

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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