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GeForce GTX 550 Ti vs Radeon HD 5770

Intro

The GeForce GTX 550 Ti has core speeds of 900 MHz on the GPU, and 1026 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs along with 32 TAUs and 24 ROPs.

Compare those specs to the Radeon HD 5770, which uses a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1200 MHz on this particular card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770 108 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 8 Watts (7%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 550 Ti should be much faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 5770 76800 MB/sec
Difference: 21696 (28%)

Texel Rate

The Radeon HD 5770 should be just a bit (approximately 18%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)

Radeon HD 5770 34000 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 5200 (18%)

Pixel Rate

The GeForce GTX 550 Ti will be much (about 59%) more effective at full screen anti-aliasing than the Radeon HD 5770, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 5770 13600 Mpixels/sec
Difference: 8000 (59%)

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 HD 5770

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 HD 5770
Manufacturer nVidia AMD
Year March 2011 October 13, 2009
Code Name GF116 Juniper XT
Memory 1024 MB 1024 MB
Core Speed 900 MHz 850 MHz
Memory Speed 4104 MHz 4800 MHz
Power (Max TDP) 116 watts 108 watts
Bandwidth 98496 MB/sec 76800 MB/sec
Texel Rate 28800 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 192 800(160x5)
Texture Mapping Units 32 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1040 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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.

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