GeForce 9800 GTX+ vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also is comprised of 1120(224x5) Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
Radeon HD 5830		175 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

In theory, the Radeon HD 5830 should perform much faster than the GeForce 9800 GTX+ in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 57600 (82%)

Texel Rate

The GeForce 9800 GTX+ is just a bit (approximately 5%) more effective at anisotropic filtering than the Radeon HD 5830. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 2432 (5%)

Pixel Rate

The Radeon HD 5830 is a bit (about 8%) better at anti-aliasing than the GeForce 9800 GTX+, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 992 (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: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface within a second. The number 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 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum 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 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics 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 amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.