GeForce GT 430 (OEM) vs Radeon HD 7950

Intro

Compare those specifications to the Radeon HD 7950, which has GPU clock speed of 800 MHz, and 1536 MB of GDDR5 memory set to run at 1250 MHz through a 384-bit bus. It also features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the Radeon HD 7950 should be quite a bit faster than the GeForce GT 430 (OEM) in general. (explain)

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

Texel Rate

The Radeon HD 7950 should be much (about 700%) more effective at texture filtering than the GeForce GT 430 (OEM). (explain)

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

Pixel Rate

The Radeon HD 7950 will be much (approximately 814%) better at anti-aliasing than the GeForce GT 430 (OEM), and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 430 (OEM)		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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 number of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.