GeForce GT 340 vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which comes with a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also features 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GT 340		69 Watts
	Difference: 8 Watts (13%)

Memory Bandwidth

The Radeon HD 5670, in theory, should be a small bit faster than the GeForce GT 340 in general. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GT 340 will be a little bit (approximately 14%) more effective at anisotropic filtering than the Radeon HD 5670. (explain)

GeForce GT 340		17600 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 2100 (14%)

Pixel Rate

The Radeon HD 5670 should be quite a bit (more or less 41%) more effective at AA than the GeForce GT 340, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 5670		6200 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 1800 (41%)

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 max amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.