GeForce GTX 280 vs Radeon HD 6750 1GB

Intro

Compare those specifications to the Radeon HD 6750 1GB, which has GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 720 Stream Processors, 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 GTX 280		236 Watts
	Difference: 150 Watts (174%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 280 should be much faster than the Radeon HD 6750 1GB in general. (explain)

GeForce GTX 280		141696 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 77696 (121%)

Texel Rate

The GeForce GTX 280 is much (more or less 85%) more effective at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 280		48160 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 22060 (85%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 280 is the winner, by a large margin. (explain)

GeForce GTX 280		19264 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 7664 (66%)

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 moved across the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its 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 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.