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

Intro

Compare those specs to the Radeon HD 4830 512MB, which uses a 55 nm design. AMD has clocked the core speed at 575 MHz. The GDDR3 memory runs at a speed of 900 MHz on this particular model. 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 be 100% faster than the GeForce GT 430 (OEM) overall, because of its greater data rate. (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 much (approximately 64%) more effective at texture filtering 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

The Radeon HD 4830 512MB will be quite a bit (about 229%) faster with regards to FSAA than the GeForce GT 430 (OEM), and able to handle higher screen resolutions more effectively. (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: Bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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