GeForce GT 430 1GB vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which has GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run 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 GT 430 1GB		60 Watts
Radeon HD 5830		175 Watts
	Difference: 115 Watts (192%)

Memory Bandwidth

The Radeon HD 5830 should in theory be quite a bit faster than the GeForce GT 430 1GB overall. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 99200 (344%)

Texel Rate

The Radeon HD 5830 should be much (about 300%) better at texture filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 33600 (300%)

Pixel Rate

The Radeon HD 5830 should be quite a bit (about 357%) more effective at AA than the GeForce GT 430 1GB, and will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 10000 (357%)

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 information (counted in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.