GeForce GT 320 vs GeForce GTX 780 Ti

Intro

Compare those specifications to the GeForce GTX 780 Ti, which features a GPU core clock speed of 875 MHz, and 3072 MB of GDDR5 RAM set to run at 1750 MHz through a 384-bit bus. It also is made up of 2880 Stream Processors, 240 TAUs, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should in theory be quite a bit superior to the GeForce GT 320 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 310720 (1229%)

Texel Rate

The GeForce GTX 780 Ti is a lot (about 1520%) more effective at texture filtering than the GeForce GT 320. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 197040 (1520%)

Pixel Rate

The GeForce GTX 780 Ti should be a lot (more or less 872%) more effective at anti-aliasing than the GeForce GT 320, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 37680 (872%)

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 (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to reach the maximum fill rate.