GeForce GT 430 1GB vs Radeon HD 7950

Intro

Compare those specs to the Radeon HD 7950, which comes with a GPU core clock speed of 800 MHz, and 1536 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also features 1792 SPUs, 112 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 7950		200 Watts
	Difference: 140 Watts (233%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 will be 733% quicker than the GeForce GT 430 1GB overall, because of its higher data rate. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 211200 (733%)

Texel Rate

The Radeon HD 7950 should be much (approximately 700%) faster with regards to AF than the GeForce GT 430 1GB. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 78400 (700%)

Pixel Rate

The Radeon HD 7950 is a lot (more or less 814%) faster with regards to full screen anti-aliasing than the GeForce GT 430 1GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 22800 (814%)

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 moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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