GeForce 8800 GTX vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which features core speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1120(224x5) SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTX		155 Watts
Radeon HD 5830		175 Watts
	Difference: 20 Watts (13%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should theoretically be quite a bit better than the GeForce 8800 GTX in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce 8800 GTX		86400 MB/sec
	Difference: 41600 (48%)

Texel Rate

The Radeon HD 5830 is much (about 22%) more effective at AF than the GeForce 8800 GTX. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce 8800 GTX		36800 Mtexels/sec
	Difference: 8000 (22%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GTX is superior to the Radeon HD 5830, but only just. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 1000 (8%)

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 MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.