GeForce GT 430 1GB vs Radeon HD 5750 512MB

Intro

Compare those specs to the Radeon HD 5750 512MB, which features core clock speeds of 700 MHz on the GPU, and 1150 MHz on the 512 MB of GDDR5 memory. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 26 Watts (43%)

Memory Bandwidth

In theory, the Radeon HD 5750 512MB should be 156% faster than the GeForce GT 430 1GB overall, because of its greater bandwidth. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 44800 (156%)

Texel Rate

The Radeon HD 5750 512MB should be much (approximately 125%) more effective at anisotropic filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 14000 (125%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5750 512MB is the winner, by far. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 8400 (300%)

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 information (in units of MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 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, 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 calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at 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 graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on 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 potential to get to the maximum fill rate.