GeForce GTX 460 2GB vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which features 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 SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 74 Watts (86%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 2GB should in theory be a lot better than the Radeon HD 6750 overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 51200 (80%)

Texel Rate

The GeForce GTX 460 2GB is quite a bit (about 45%) faster with regards to texture filtering than the Radeon HD 6750. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 11700 (45%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 2GB is the winner, and very much so. (explain)

GeForce GTX 460 2GB		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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.