GeForce GTX 460 1GB vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which comes with core speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1120(224x5) SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 1GB		160 Watts
Radeon HD 5830		175 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

The Radeon HD 5830 should in theory perform a small bit faster than the GeForce GTX 460 1GB overall. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 12800 (11%)

Texel Rate

The Radeon HD 5830 will be a small bit (more or less 19%) faster with regards to anisotropic filtering than the GeForce GTX 460 1GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 7000 (19%)

Pixel Rate

The GeForce GTX 460 1GB should be quite a bit (more or less 69%) better at full screen anti-aliasing than the Radeon HD 5830, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 8800 (69%)

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 max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 can be applied in one second. This number is worked out by multiplying the total texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.