GeForce GT 430 (OEM) vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which features GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also is comprised of 800 SPUs, 40 TAUs, and 16 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 6790		150 Watts
	Difference: 90 Watts (150%)

Memory Bandwidth

Performance-wise, the Radeon HD 6790 should in theory be a lot superior to the GeForce GT 430 (OEM) in general. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6790 is much (approximately 200%) more effective at texture filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 22400 (200%)

Pixel Rate

The Radeon HD 6790 is a lot (approximately 380%) better at FSAA than the GeForce GT 430 (OEM), and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 10640 (380%)

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 largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.