GeForce GT 430 1GB vs Radeon HD 4850 X2 1GB

Intro

Compare those specs to the Radeon HD 4850 X2 1GB, which features core clock speeds of 625 MHz on the GPU, and 993 MHz on the 1024 MB of GDDR3 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 4850 X2 1GB		250 Watts
	Difference: 190 Watts (317%)

Memory Bandwidth

Performance-wise, the Radeon HD 4850 X2 1GB should theoretically be a lot better than the GeForce GT 430 1GB overall. (explain)

Radeon HD 4850 X2 1GB		127104 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 98304 (341%)

Texel Rate

The Radeon HD 4850 X2 1GB should be much (approximately 346%) better at anisotropic filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 4850 X2 1GB		50000 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 38800 (346%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4850 X2 1GB is superior to the GeForce GT 430 1GB, by a large margin. (explain)

Radeon HD 4850 X2 1GB		20000 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 17200 (614%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.