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GeForce GTX 580 vs GeForce GTX 660 Ti

Intro

The GeForce GTX 580 has a clock speed of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also uses a 384-bit bus, and uses a 40 nm design. It is made up of 512 SPUs, 64 Texture Address Units, and 48 Raster Operation Units.

Compare those specifications to the GeForce GTX 660 Ti, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this specific card. It features 1344 SPUs as well as 112 TAUs and 24 ROPs.

Display Graphs

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(No game benchmarks for this combination yet.)

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

As far as performance goes, the GeForce GTX 580 should theoretically be quite a bit superior to 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 a lot (more or less 107%) better at texture 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 should be much (about 69%) more effective at full screen anti-aliasing than the GeForce GTX 660 Ti, and capable of handling 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
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1536 MB 2048 MB
Core Speed 772 MHz 915 MHz
Shader Speed 1544 MHz 915 MHz
Memory Speed 1002 MHz (4008 MHz effective) 1500 MHz (6000 MHz effective)
Unified Shaders 512 1344
Texture Mapping Units 64 112
Render Output Units 48 24
Bus Type GDDR5 GDDR5
Bus Width 384-bit 192-bit
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3
Power (Max TDP) 244 watts 150 watts
Shader Model 5.0 5.0
Bandwidth 192384 MB/sec 144000 MB/sec
Texel Rate 49408 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 21960 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This 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 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 that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability 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
[...] 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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