GeForce GT 430 (OEM) vs Radeon HD 4650 1GB

Intro

Compare that to the Radeon HD 4650 1GB, which has core speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GT 430 (OEM)		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

In theory, the GeForce GT 430 (OEM) should be 29% quicker than the Radeon HD 4650 1GB overall, because of its higher data rate. (explain)

GeForce GT 430 (OEM)		28800 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 6400 (29%)

Texel Rate

The Radeon HD 4650 1GB will be a lot (approximately 71%) better at texture filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 4650 1GB		19200 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 8000 (71%)

Pixel Rate

The Radeon HD 4650 1GB should be much (more or less 71%) more effective at anti-aliasing than the GeForce GT 430 (OEM), and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 4650 1GB		4800 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 2000 (71%)

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 maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, 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 amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.