Geforce GTX 690 vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which comes with core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs along with 20 Texture Address Units 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 690		300 Watts
	Difference: 239 Watts (392%)

Memory Bandwidth

The Geforce GTX 690, in theory, should be a lot faster than the Radeon HD 5670 overall. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 320512 (501%)

Texel Rate

The Geforce GTX 690 should be much (about 1411%) better at anisotropic filtering than the Radeon HD 5670. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 218740 (1411%)

Pixel Rate

The Geforce GTX 690 is a lot (approximately 845%) faster with regards to anti-aliasing than the Radeon HD 5670, and capable of handling higher resolutions without slowing down too much. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 52360 (845%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.