GeForce GT 320 vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which has GPU clock speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also is comprised of 1344 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Geforce GTX 670		170 Watts
	Difference: 127 Watts (295%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should be a lot faster than the GeForce GT 320 overall. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 166720 (659%)

Texel Rate

The Geforce GTX 670 should be a lot (more or less 691%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 89520 (691%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 670 is the winner, by far. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 24960 (578%)

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 (counted in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.