GeForce GT 340 1GB vs GeForce GTX 570

Intro

Compare all that to the GeForce GTX 570, which features GPU core speed of 732 MHz, and 1280 MB of GDDR5 RAM running at 950 MHz through a 320-bit bus. It also is made up of 480 Stream Processors, 60 TAUs, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTX 570		219 Watts
	Difference: 150 Watts (217%)

Memory Bandwidth

Performance-wise, the GeForce GTX 570 should in theory be a lot superior to the GeForce GT 340 1GB overall. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 97600 (179%)

Texel Rate

The GeForce GTX 570 should be quite a bit (about 150%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 26320 (150%)

Pixel Rate

The GeForce GTX 570 should be a lot (about 565%) faster with regards to full screen anti-aliasing than the GeForce GT 340 1GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 24880 (565%)

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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus 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 bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the 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 maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.