GeForce GTX 580 3GB vs Radeon HD 6750 1GB

Intro

Compare those specs to the Radeon HD 6750 1GB, which has core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 720 SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 158 Watts (184%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 3GB should theoretically be much superior to the Radeon HD 6750 1GB in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 128384 (201%)

Texel Rate

The GeForce GTX 580 3GB is a lot (more or less 89%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 23308 (89%)

Pixel Rate

The GeForce GTX 580 3GB is much (about 219%) more effective at full screen anti-aliasing than the Radeon HD 6750 1GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 25456 (219%)

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 data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.