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GeForce GTX 285 2GB vs Geforce GTX 680

Intro

The GeForce GTX 285 2GB comes with a GPU core speed of 648 MHz, and the 2048 MB of GDDR3 RAM is set to run at 1242 MHz through a 512-bit bus. It also is comprised of 240 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Geforce GTX 680, which has a GPU core clock speed of 1006 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680 195 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 9 Watts (5%)

Memory Bandwidth

The Geforce GTX 680, in theory, should be much faster than the GeForce GTX 285 2GB in general. (explain)

Geforce GTX 680 192256 MB/sec
GeForce GTX 285 2GB 158976 MB/sec
Difference: 33280 (21%)

Texel Rate

The Geforce GTX 680 should be much (approximately 148%) more effective at anisotropic filtering than the GeForce GTX 285 2GB. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce GTX 285 2GB 51840 Mtexels/sec
Difference: 76928 (148%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 680 is the winner, by far. (explain)

Geforce GTX 680 32192 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 11456 (55%)

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 2GB

Amazon.com

Check prices at:

Geforce GTX 680

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 285 2GB Geforce GTX 680
Manufacturer nVidia nVidia
Year January 15, 2009 March 2012
Code Name G200b GK104
Memory 2048 MB 2048 MB
Core Speed 648 MHz 1006 MHz
Memory Speed 2484 MHz 6008 MHz
Power (Max TDP) 204 watts 195 watts
Bandwidth 158976 MB/sec 192256 MB/sec
Texel Rate 51840 Mtexels/sec 128768 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 32192 Mpixels/sec
Unified Shaders 240 1536
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 3540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Geforce GTX 680

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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