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GeForce GTX 550 Ti vs GeForce GTX 650 Ti 2GB

Intro

The GeForce GTX 550 Ti makes use of a 40 nm design. nVidia has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a speed of 1026 MHz on this particular card. It features 192 SPUs along with 32 Texture Address Units and 24 Rasterization Operator Units.

Compare all that to the GeForce GTX 650 Ti 2GB, which comes with a clock speed of 928 MHz and a GDDR5 memory speed of 1350 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 768 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB 110 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 6 Watts (5%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should perform a bit faster than the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce GTX 550 Ti 98496 MB/sec
GeForce GTX 650 Ti 2GB 86400 MB/sec
Difference: 12096 (14%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be quite a bit (about 106%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 30592 (106%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 550 Ti is a better choice, and very much so. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
Difference: 6752 (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 550 Ti

Amazon.com

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GeForce GTX 650 Ti 2GB

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 650 Ti 2GB
Manufacturer nVidia nVidia
Year March 2011 October 2012
Code Name GF116 GK106
Memory 1024 MB 2048 MB
Core Speed 900 MHz 928 MHz
Memory Speed 4104 MHz 5400 MHz
Power (Max TDP) 116 watts 110 watts
Bandwidth 98496 MB/sec 86400 MB/sec
Texel Rate 28800 Mtexels/sec 59392 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 14848 Mpixels/sec
Unified Shaders 192 768
Texture Mapping Units 32 64
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million 2540 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 550 Ti

Amazon.com

Check prices at:

GeForce GTX 650 Ti 2GB

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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