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GeForce GTX 280 vs Geforce GTX 680

Intro

The GeForce GTX 280 features a clock speed of 602 MHz and a GDDR3 memory speed of 1107 MHz. It also makes use of a 512-bit bus, and makes use of a 65 nm design. It features 240 SPUs, 80 TAUs, and 32 ROPs.

Compare those specs to the Geforce GTX 680, which has GPU clock speed of 1006 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680 195 Watts
GeForce GTX 280 236 Watts
Difference: 41 Watts (21%)

Memory Bandwidth

The Geforce GTX 680, in theory, should be a lot faster than the GeForce GTX 280 in general. (explain)

Geforce GTX 680 192256 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 50560 (36%)

Texel Rate

The Geforce GTX 680 should be much (about 167%) faster with regards to anisotropic filtering than the GeForce GTX 280. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 80608 (167%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 680 is a better choice, and very much so. (explain)

Geforce GTX 680 32192 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 12928 (67%)

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

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Geforce GTX 680

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 280 Geforce GTX 680
Manufacturer nVidia nVidia
Year June 17, 2008 March 2012
Code Name G200 GK104
Memory 1024 MB 2048 MB
Core Speed 602 MHz 1006 MHz
Memory Speed 2214 MHz 6008 MHz
Power (Max TDP) 236 watts 195 watts
Bandwidth 141696 MB/sec 192256 MB/sec
Texel Rate 48160 Mtexels/sec 128768 Mtexels/sec
Pixel Rate 19264 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 65 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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 280

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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