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GeForce GTX 580 vs GeForce GTX 660 Ti

Intro

The GeForce GTX 580 uses a 40 nm design. nVidia has set the core speed at 772 MHz. The GDDR5 RAM runs at a speed of 1002 MHz on this particular model. It features 512 SPUs along with 64 TAUs and 48 Rasterization Operator Units.

Compare those specs to the GeForce GTX 660 Ti, which makes use of a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this model. It features 1344 SPUs as well as 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 580 244 Watts
Difference: 94 Watts (63%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 should perform much faster than the GeForce GTX 660 Ti in general. (explain)

GeForce GTX 580 192384 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 48384 (34%)

Texel Rate

The GeForce GTX 660 Ti is quite a bit (more or less 107%) more effective at anisotropic filtering than the GeForce GTX 580. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 580 49408 Mtexels/sec
Difference: 53072 (107%)

Pixel Rate

The GeForce GTX 580 is a lot (more or less 69%) better at FSAA than the GeForce GTX 660 Ti, and also will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 580 37056 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 15096 (69%)

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 580

Amazon.com

GeForce GTX 660 Ti

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 580 GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year November 2010 August 2012
Code Name GF110 GK104
Memory 1536 MB 2048 MB
Core Speed 772 MHz 915 MHz
Memory Speed 4008 MHz 6000 MHz
Power (Max TDP) 244 watts 150 watts
Bandwidth 192384 MB/sec 144000 MB/sec
Texel Rate 49408 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 512 1344
Texture Mapping Units 64 112
Render Output Units 48 24
Bus Type GDDR5 GDDR5
Bus Width 384-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 3540 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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also 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 of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Comments

2 Responses to “GeForce GTX 580 vs GeForce GTX 660 Ti”
osiris says:

Just a little correction.
The power difference or 94 watts is 38.5 % of the 580

Need help with a computer build - XboxMB - Xbox Message Boards says:

[...] it must be instantly better. I5 is for gaming I7 is for hard core multi tasking I believe. Stats: GeForce GTX 580 vs GeForce GTX 660 Ti – Performance Comparison Benchmarks @ Hardware Compare [...]

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