GeForce GT 340 1GB vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which has GPU clock speed of 775 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 256-bit bus. It also is comprised of 960 Stream Processors, 48 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 340 1GB		69 Watts
Radeon HD 6850		127 Watts
	Difference: 58 Watts (84%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6850 should theoretically be much superior to the GeForce GT 340 1GB in general. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 73600 (135%)

Texel Rate

The Radeon HD 6850 should be much (approximately 111%) more effective at AF than the GeForce GT 340 1GB. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 19600 (111%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6850 is superior to the GeForce GT 340 1GB, by a large margin. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 20400 (464%)

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 maximum amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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.