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GeForce GTX 550 Ti vs Radeon HD 6750

Intro

The GeForce GTX 550 Ti has a GPU core clock speed of 900 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1026 MHz through a 192-bit bus. It also features 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Compare all of that to the Radeon HD 6750, which uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this model. It features 720 SPUs as well as 36 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

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 theoretically be much superior to 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 is a small bit (more or less 10%) more effective 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

The GeForce GTX 550 Ti should be much (approximately 86%) more effective at FSAA than the Radeon HD 6750, and should be able to handle higher screen resolutions more effectively. (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

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

Model GeForce GTX 550 Ti Radeon HD 6750
Manufacturer nVidia AMD
Year March 2011 January 2011
Code Name GF116 Juniper Pro
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe x16
Memory 1024 MB 512 MB
Core Speed 900 MHz 725 MHz
Shader Speed 1800 MHz (N/A) MHz
Memory Speed 1026 MHz (4104 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 192 720
Texture Mapping Units 32 36
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.0
Power (Max TDP) 116 watts 86 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 64000 MB/sec
Texel Rate 28800 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 11600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, 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 that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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