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GeForce GTX 285 1GB vs Geforce GTX 680


The GeForce GTX 285 1GB comes with a core clock frequency of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also makes use of a 512-bit bus, and makes use of a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Geforce GTX 680, which comes with a core clock speed of 1006 MHz and a GDDR5 memory speed of 1502 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 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 1GB 204 Watts
Difference: 9 Watts (5%)

Memory Bandwidth

Theoretically, the Geforce GTX 680 should perform quite a bit faster than the GeForce GTX 285 1GB in general. (explain)

Geforce GTX 680 192256 MB/sec
GeForce GTX 285 1GB 158976 MB/sec
Difference: 33280 (21%)

Texel Rate

The Geforce GTX 680 should be a lot (approximately 148%) more effective at texture filtering than the GeForce GTX 285 1GB. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 76928 (148%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 680 is superior to the GeForce GTX 285 1GB, by a large margin. (explain)

Geforce GTX 680 32192 Mpixels/sec
GeForce GTX 285 1GB 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 1GB

Geforce GTX 680

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.


Display Specifications

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Model GeForce GTX 285 1GB Geforce GTX 680
Manufacturer nVidia nVidia
Year January 15, 2009 March 2012
Code Name G200b GK104
Memory 1024 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 max amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.


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