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GeForce GTX 550 Ti vs GeForce GTX 580 3GB

Intro

The GeForce GTX 550 Ti comes with a GPU core speed of 900 MHz, and the 1024 MB of GDDR5 memory is set to run at 1026 MHz through a 192-bit bus. It also is comprised of 192 SPUs, 32 TAUs, and 24 ROPs.

Compare those specs to the GeForce GTX 580 3GB, which comes with core clock speeds of 772 MHz on the GPU, and 1002 MHz on the 3072 MB of GDDR5 memory. It features 512 SPUs as well as 64 Texture Address Units and 48 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 550 Ti 116 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 128 Watts (110%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 3GB should in theory be a lot better than the GeForce GTX 550 Ti overall. (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 quite a bit (approximately 72%) faster with regards to AF 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 will be a lot (approximately 72%) faster with regards to AA than the GeForce GTX 550 Ti, and also 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

GeForce GTX 580 3GB

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

Display 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
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe x16
Memory 1024 MB 3072 MB
Core Speed 900 MHz 772 MHz
Shader Speed 1800 MHz 1544 MHz
Memory Speed 4104 MHz 4008 MHz
Unified Shaders 192 512
Texture Mapping Units 32 64
Render Output Units 24 48
Bus Type GDDR5 GDDR5
Bus Width 192-bit 384-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 116 watts 244 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 192384 MB/sec
Texel Rate 28800 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 37056 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface in one 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 it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of 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 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 that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

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