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GeForce GTX 550 Ti vs Radeon HD 6750

Intro

The GeForce GTX 550 Ti comes with core clock speeds of 900 MHz on the GPU, and 1026 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 Texture Address Units and 24 Rasterization Operator Units.

Compare those specs to the Radeon HD 6750, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular model. It features 720 SPUs along with 36 TAUs 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

The GeForce GTX 550 Ti should theoretically perform a lot faster than 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 (about 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

If using a high resolution is important to you, then the GeForce GTX 550 Ti is a better choice, 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

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must 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 amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

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