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GeForce GTX 550 Ti vs Radeon R7 250

Intro

The GeForce GTX 550 Ti features a core clock speed 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 features 192 SPUs, 32 TAUs, and 24 Raster Operation Units.

Compare that to the Radeon R7 250, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1150 MHz on this particular model. It features 384 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 51 Watts (78%)

Memory Bandwidth

Theoretically, the GeForce GTX 550 Ti should perform a lot faster than the Radeon R7 250 overall. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 24896 (34%)

Texel Rate

The GeForce GTX 550 Ti is a small bit (approximately 20%) more effective at AF than the Radeon R7 250. (explain)

GeForce GTX 550 Ti 28800 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 4800 (20%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 550 Ti is a better choice, by far. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 13600 (170%)

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

Radeon R7 250

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 550 Ti Radeon R7 250
Manufacturer nVidia AMD
Year March 2011 October 2013
Code Name GF116 Oland XT
Memory 1024 MB 1024 MB
Core Speed 900 MHz 1000 MHz
Memory Speed 4104 MHz 4600 MHz
Power (Max TDP) 116 watts 65 watts
Bandwidth 98496 MB/sec 73600 MB/sec
Texel Rate 28800 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 192 384
Texture Mapping Units 32 24
Render Output Units 24 8
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million 1040 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at 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 the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

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