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GeForce GTX 550 Ti vs GeForce GTX 580 3GB

Intro

The GeForce GTX 550 Ti has a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1026 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 24 Raster Operation Units.

Compare all that to the GeForce GTX 580 3GB, which features a clock speed of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also features a 384-bit memory bus, and uses a 40 nm design. It is made up of 512 SPUs, 64 Texture Address Units, and 48 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti 116 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 128 Watts (110%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be 95% faster than the GeForce GTX 550 Ti overall, due to its higher bandwidth. (explain)

GeForce GTX 580 3GB 192384 MB/sec
GeForce GTX 550 Ti 98496 MB/sec
Difference: 93888 (95%)

Texel Rate

The GeForce GTX 580 3GB should be much (approximately 72%) more effective at texture filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTX 580 3GB 49408 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 20608 (72%)

Pixel Rate

The GeForce GTX 580 3GB should be quite a bit (more or less 72%) better at FSAA than the GeForce GTX 550 Ti, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
GeForce GTX 550 Ti 21600 Mpixels/sec
Difference: 15456 (72%)

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 550 Ti

Amazon.com

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GeForce GTX 580 3GB

Amazon.com

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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 550 Ti GeForce GTX 580 3GB
Manufacturer nVidia nVidia
Year March 2011 November 2010
Code Name GF116 GF110
Memory 1024 MB 3072 MB
Core Speed 900 MHz 772 MHz
Memory Speed 4104 MHz 4008 MHz
Power (Max TDP) 116 watts 244 watts
Bandwidth 98496 MB/sec 192384 MB/sec
Texel Rate 28800 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 192 512
Texture Mapping Units 32 64
Render Output Units 24 48
Bus Type GDDR5 GDDR5
Bus Width 192-bit 384-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 3000 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 550 Ti

Amazon.com

Check prices at:

GeForce GTX 580 3GB

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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