GeForce 8800 GTS (G92) vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which comes with a core clock speed of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1120(224x5) SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
Radeon HD 5830		175 Watts
	Difference: 40 Watts (30%)

Memory Bandwidth

In theory, the Radeon HD 5830 should be a lot faster than the GeForce 8800 GTS (G92) overall. (explain)

Radeon HD 5830		128000 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 65920 (106%)

Texel Rate

The Radeon HD 5830 should be a little bit (approximately 8%) better at anisotropic filtering than the GeForce 8800 GTS (G92). (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 3200 (8%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5830 is the winner, by a large margin. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 2400 (23%)

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 (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.