GeForce 9800 GT 1GB vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific model. It features 720 SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
GeForce 9800 GT 1GB		105 Watts
	Difference: 19 Watts (22%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 1GB should perform just a bit faster than the GeForce 9800 GT 1GB overall. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce 9800 GT 1GB should be much (more or less 29%) more effective at AF than the Radeon HD 6750 1GB. (explain)

GeForce 9800 GT 1GB		33600 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 7500 (29%)

Pixel Rate

The Radeon HD 6750 1GB should be quite a bit (about 21%) better at full screen anti-aliasing than the GeForce 9800 GT 1GB, and will be able to handle higher resolutions better. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 2000 (21%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video 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 amount of pixels that the graphics chip can 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 - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.