GeForce GT 340 1GB vs Radeon HD 5670

Intro

Compare all that to the Radeon HD 5670, which has clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 8 Watts (13%)

Memory Bandwidth

In theory, the Radeon HD 5670 is 18% quicker than the GeForce GT 340 1GB in general, due to its higher bandwidth. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GT 340 1GB should be a little bit (more or less 14%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 2100 (14%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5670 is the winner, by far. (explain)

Radeon HD 5670		6200 Mpixels/sec
GeForce GT 340 1GB		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 information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.