GeForce GTX 460 vs Radeon HD 5670

Intro

Compare all that to the Radeon HD 5670, which comes with clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 460		150 Watts
	Difference: 89 Watts (146%)

Memory Bandwidth

In theory, the GeForce GTX 460 will be 35% quicker than the Radeon HD 5670 in general, because of its greater bandwidth. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 22400 (35%)

Texel Rate

The GeForce GTX 460 will be a lot (approximately 144%) faster with regards to texture filtering than the Radeon HD 5670. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 22300 (144%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 is superior to the Radeon HD 5670, and very much so. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 10000 (161%)

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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.