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GeForce GTX 460 vs GeForce GTX 660


Intro

The GeForce GTX 460 makes use of a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 memory works at a frequency of 900 MHz on this specific model. It features 336 SPUs along with 56 TAUs and 24 Rasterization Operator Units.

Compare all that to the GeForce GTX 660, which comes with a GPU core clock speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also features 960 SPUs, 80 Texture Address Units, and 24 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 660 5090 points
GeForce GTX 460 2560 points
Difference: 2530 (99%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
GeForce GTX 460 150 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 will be 67% quicker than the GeForce GTX 460 in general, due to its higher data rate. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 460 86400 MB/sec
Difference: 57792 (67%)

Texel Rate

The GeForce GTX 660 is quite a bit (about 107%) more effective at AF than the GeForce GTX 460. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 460 37800 Mtexels/sec
Difference: 40600 (107%)

Pixel Rate

The GeForce GTX 660 should be quite a bit (approximately 45%) better at AA than the GeForce GTX 460, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 460 16200 Mpixels/sec
Difference: 7320 (45%)

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 460

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 460 GeForce GTX 660
Manufacturer nVidia nVidia
Year July 2010 September 2012
Code Name GF104 GK106
Memory 768 MB 2048 MB
Core Speed 675 MHz 980 MHz
Memory Speed 3600 MHz 6008 MHz
Power (Max TDP) 150 watts 140 watts
Bandwidth 86400 MB/sec 144192 MB/sec
Texel Rate 37800 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 16200 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 336 960
Texture Mapping Units 56 80
Render Output Units 24 24
Bus Type GDDR5 GDDR5
Bus Width 192-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 1950 million 2540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 460

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.

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