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GeForce GTX 280 vs GeForce GTX 660

Intro

The GeForce GTX 280 has a GPU core speed of 602 MHz, and the 1024 MB of GDDR3 memory runs at 1107 MHz through a 512-bit bus. It also features 240 Stream Processors, 80 TAUs, and 32 ROPs.

Compare all that to the GeForce GTX 660, which features GPU clock speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also is made up of 960 Stream Processors, 80 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
GeForce GTX 280 236 Watts
Difference: 96 Watts (69%)

Memory Bandwidth

In theory, the GeForce GTX 660 will be 2% quicker than the GeForce GTX 280 in general, due to its higher data rate. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 2496 (2%)

Texel Rate

The GeForce GTX 660 is much (more or less 63%) faster with regards to texture filtering than the GeForce GTX 280. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 30240 (63%)

Pixel Rate

The GeForce GTX 660 is quite a bit (approximately 22%) faster with regards to AA than the GeForce GTX 280, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 4256 (22%)

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 660

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 660
Manufacturer nVidia nVidia
Year June 17, 2008 September 2012
Code Name G200 GK106
Memory 1024 MB 2048 MB
Core Speed 602 MHz 980 MHz
Memory Speed 2214 MHz 6008 MHz
Power (Max TDP) 236 watts 140 watts
Bandwidth 141696 MB/sec 144192 MB/sec
Texel Rate 48160 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 240 960
Texture Mapping Units 80 80
Render Output Units 32 24
Bus Type GDDR3 GDDR5
Bus Width 512-bit 192-bit
Fab Process 65 nm 28 nm
Transistors 1400 million 2540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its 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 clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - 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 660

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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