GeForce 9800 GT 512MB vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this card. It features 720 SPUs as well as 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 19 Watts (22%)

Memory Bandwidth

In theory, the Radeon HD 6750 1GB should be 11% quicker than the GeForce 9800 GT 512MB in general, because of its higher bandwidth. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce 9800 GT 512MB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce 9800 GT 512MB is quite a bit (approximately 29%) more effective at AF than the Radeon HD 6750 1GB. (explain)

GeForce 9800 GT 512MB		33600 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 7500 (29%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6750 1GB is superior to the GeForce 9800 GT 512MB, and very much so. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
GeForce 9800 GT 512MB		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: Bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.