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GeForce GT 450 (OEM) vs GeForce GTX 550 Ti

Intro

The GeForce GT 450 (OEM) features a GPU core clock speed of 790 MHz, and the 1536 MB of GDDR5 RAM is set to run at 1000 MHz through a 192-bit bus. It also is made up of 144 Stream Processors, 24 Texture Address Units, and 24 Raster Operation Units.

Compare that to the GeForce GTX 550 Ti, which features a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1026 MHz. It also makes use of a 192-bit memory bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 10 Watts (9%)

Memory Bandwidth

The GeForce GTX 550 Ti, in theory, should perform a bit faster than the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 550 Ti 98496 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 2496 (3%)

Texel Rate

The GeForce GTX 550 Ti is quite a bit (more or less 52%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 550 Ti 28800 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 9840 (52%)

Pixel Rate

The GeForce GTX 550 Ti is a little bit (about 14%) better at AA than the GeForce GT 450 (OEM), and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
GeForce GT 450 (OEM) 18960 Mpixels/sec
Difference: 2640 (14%)

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 GT 450 (OEM)

Amazon.com

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GeForce GTX 550 Ti

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 GT 450 (OEM) GeForce GTX 550 Ti
Manufacturer nVidia nVidia
Year October 2010 March 2011
Code Name GF106 GF116
Memory 1536 MB 1024 MB
Core Speed 790 MHz 900 MHz
Memory Speed 4000 MHz 4104 MHz
Power (Max TDP) 106 watts 116 watts
Bandwidth 96000 MB/sec 98496 MB/sec
Texel Rate 18960 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 21600 Mpixels/sec
Unified Shaders 144 192
Texture Mapping Units 24 32
Render Output Units 24 24
Bus Type GDDR5 GDDR5
Bus Width 192-bit 192-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1170 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 450 (OEM)

Amazon.com

Check prices at:

GeForce GTX 550 Ti

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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