GeForce 9800 GTX vs Radeon HD 6750

Intro

Compare that to the Radeon HD 6750, which uses a 40 nm design. AMD has set the core speed at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this particular model. It features 720 SPUs along with 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce 9800 GTX		140 Watts
	Difference: 54 Watts (63%)

Memory Bandwidth

The GeForce 9800 GTX should in theory be a bit faster than the Radeon HD 6750 overall. (explain)

GeForce 9800 GTX		70400 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce 9800 GTX is quite a bit (more or less 66%) better at texture filtering than the Radeon HD 6750. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 17100 (66%)

Pixel Rate

The Radeon HD 6750 will be a bit (more or less 7%) better at AA than the GeForce 9800 GTX, and will be able to handle higher resolutions better. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 800 (7%)

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 largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.