GeForce GT 430 1GB vs Radeon HD 4730

Intro

Compare all that to the Radeon HD 4730, which features a core clock speed of 700 MHz and a GDDR5 memory speed of 900 MHz. It also features a 128-bit bus, and uses a 55 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 4730		140 Watts
	Difference: 80 Watts (133%)

Memory Bandwidth

In theory, the Radeon HD 4730 is 100% faster than the GeForce GT 430 1GB in general, because of its higher data rate. (explain)

Radeon HD 4730		57600 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The Radeon HD 4730 should be quite a bit (more or less 100%) more effective at AF than the GeForce GT 430 1GB. (explain)

Radeon HD 4730		22400 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 11200 (100%)

Pixel Rate

The Radeon HD 4730 will be much (approximately 100%) more effective at AA than the GeForce GT 430 1GB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 4730		5600 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 2800 (100%)

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 transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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