GeForce GT 430 vs Radeon HD 7950

Intro

Compare those specifications to the Radeon HD 7950, which has a clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon HD 7950 should in theory be quite a bit faster than the GeForce GT 430 overall. (explain)

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

Texel Rate

The Radeon HD 7950 is a lot (about 700%) faster with regards to texture filtering than the GeForce GT 430. (explain)

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

Pixel Rate

The Radeon HD 7950 will be much (about 814%) better at FSAA than the GeForce GT 430, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 430		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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.