GeForce GT 430 (OEM) vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which comes with clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 4830 512MB		95 Watts
	Difference: 35 Watts (58%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4830 512MB should perform quite a bit faster than the GeForce GT 430 (OEM) overall. (explain)

Radeon HD 4830 512MB		57600 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The Radeon HD 4830 512MB is a lot (more or less 64%) better at AF than the GeForce GT 430 (OEM). (explain)

Radeon HD 4830 512MB		18400 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 7200 (64%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 4830 512MB is superior to the GeForce GT 430 (OEM), and very much so. (explain)

Radeon HD 4830 512MB		9200 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 6400 (229%)

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 largest amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.