GeForce 8800 Ultra vs Radeon HD 6750

Intro

Compare those specs to the Radeon HD 6750, which has 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 features 720 Stream Processors, 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 8800 Ultra		171 Watts
	Difference: 85 Watts (99%)

Memory Bandwidth

Performance-wise, the GeForce 8800 Ultra should theoretically be quite a bit better than the Radeon HD 6750 in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 39680 (62%)

Texel Rate

The GeForce 8800 Ultra will be much (approximately 50%) better at texture filtering than the Radeon HD 6750. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 13068 (50%)

Pixel Rate

The GeForce 8800 Ultra is quite a bit (more or less 27%) faster with regards to AA than the Radeon HD 6750, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 3088 (27%)

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 maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.