GeForce GT 130 vs Radeon HD 6790

Intro

Compare all of that to the Radeon HD 6790, which has GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM running at 1050 MHz through a 256-bit bus. It also is made up of 800 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
Radeon HD 6790		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 should be much faster than the GeForce GT 130 overall. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 122400 (1020%)

Texel Rate

The Radeon HD 6790 is a lot (approximately 180%) faster with regards to anisotropic filtering than the GeForce GT 130. (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 21600 (180%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6790 is a better choice, by a large margin. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 5440 (68%)

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 worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.