Geforce GTX 690 vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which has GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is comprised of 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
Geforce GTX 690		300 Watts
	Difference: 125 Watts (71%)

Memory Bandwidth

The Geforce GTX 690, in theory, should be a lot faster than the Radeon HD 5830 in general. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 256512 (200%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 423%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 189440 (423%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 690 is superior to the Radeon HD 5830, by far. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 45760 (358%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.