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GeForce GTX 550 Ti vs Radeon HD 6750

Intro

The GeForce GTX 550 Ti has a clock speed of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit memory bus, and uses a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Compare all of that to the Radeon HD 6750, which has GPU core speed of 725 MHz, and 512 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also is made up of 720 Stream Processors, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 86 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 30 Watts (35%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should perform quite a bit faster than the Radeon HD 6750 overall. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 6750 64000 MB/sec
Difference: 34496 (54%)

Texel Rate

The GeForce GTX 550 Ti should be a bit (about 10%) more effective at texture filtering than the Radeon HD 6750. (explain)

GeForce GTX 550 Ti 28800 Mtexels/sec
Radeon HD 6750 26100 Mtexels/sec
Difference: 2700 (10%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 550 Ti is the winner, and very much so. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 6750 11600 Mpixels/sec
Difference: 10000 (86%)

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 6750

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 6750
Manufacturer nVidia AMD
Year March 2011 January 2011
Code Name GF116 Juniper Pro
Memory 1024 MB 512 MB
Core Speed 900 MHz 725 MHz
Memory Speed 4104 MHz 4000 MHz
Power (Max TDP) 116 watts 86 watts
Bandwidth 98496 MB/sec 64000 MB/sec
Texel Rate 28800 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 192 720
Texture Mapping Units 32 36
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 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write 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 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

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