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GeForce GTX 550 Ti vs Radeon HD 6750

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 frequency of 1026 MHz on this specific model. It features 192 SPUs along with 32 Texture Address Units and 24 ROPs.

Compare all of that to the Radeon HD 6750, which comes with a GPU core clock speed of 725 MHz, and 512 MB of GDDR5 memory 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

As far as performance goes, the GeForce GTX 550 Ti should in theory be a lot superior to the Radeon HD 6750 in general. (explain)

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

Texel Rate

The GeForce GTX 550 Ti is a small bit (approximately 10%) better at AF 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 running with high levels of AA 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 max amount of data (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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