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GeForce GTX 260 vs GeForce GTX 660


Intro

The GeForce GTX 260 comes with clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 192 SPUs as well as 64 TAUs and 28 Rasterization Operator Units.

Compare that to the GeForce GTX 660, which comes with GPU core speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also is comprised of 960 Stream Processors, 80 Texture Address Units, 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 260 182 Watts
Difference: 42 Watts (30%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 should perform a lot faster than the GeForce GTX 260 overall. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 32304 (29%)

Texel Rate

The GeForce GTX 660 should be quite a bit (approximately 113%) more effective at anisotropic filtering than the GeForce GTX 260. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 41536 (113%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 660 is a better choice, and very much so. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 7392 (46%)

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

Display Prices

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GeForce GTX 260

Amazon.com

GeForce GTX 660

Amazon.com

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 260 GeForce GTX 660
Manufacturer nVidia nVidia
Year June 16, 2008 September 2012
Code Name G200 GK106
Memory 896 MB 2048 MB
Core Speed 576 MHz 980 MHz
Memory Speed 1998 MHz 6008 MHz
Power (Max TDP) 182 watts 140 watts
Bandwidth 111888 MB/sec 144192 MB/sec
Texel Rate 36864 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 192 960
Texture Mapping Units 64 80
Render Output Units 28 24
Bus Type GDDR3 GDDR5
Bus Width 448-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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

GeForce GTX 660

Amazon.com

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.

Comments

One Response to “GeForce GTX 260 vs GeForce GTX 660”
GTX 260 versus GTX 660 - Hardware Canucks says:

[...] GeForce GTX 260 vs GeForce GTX 660 – Performance Comparison Benchmarks @ Hardware Compare 30% only more memory bandwith 😛 [...]

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