GeForce GTX 260 vs Radeon HD 6750 1GB

Intro

Compare those specifications 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 runs at a speed of 1000 MHz on this model. 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 GTX 260		182 Watts
	Difference: 96 Watts (112%)

Memory Bandwidth

In theory, the GeForce GTX 260 will be 75% quicker than the Radeon HD 6750 1GB overall, due to its greater bandwidth. (explain)

GeForce GTX 260		111888 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 47888 (75%)

Texel Rate

The GeForce GTX 260 will be much (more or less 41%) better at texture filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 260		36864 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 10764 (41%)

Pixel Rate

The GeForce GTX 260 should be a lot (approximately 39%) more effective at full screen anti-aliasing than the Radeon HD 6750 1GB, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 260		16128 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 4528 (39%)

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 max amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.