GeForce GTX 550 Ti vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which comes with a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the GeForce GTX 550 Ti should perform much 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 will be a little bit (approximately 10%) better 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

The GeForce GTX 550 Ti will be quite a bit (approximately 86%) better at full screen anti-aliasing than the Radeon HD 6750, and also should be able to handle higher resolutions without slowing down too much. (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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result 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 anti-aliasing, HDR 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 is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.