GeForce GT 315 vs GeForce GTX 780 Ti

Intro

Compare that to the GeForce GTX 780 Ti, which comes with a core clock speed of 875 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 384-bit bus, and uses a 28 nm design. It is made up of 2880 SPUs, 240 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 198 Watts (381%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti will be 1229% quicker than the GeForce GT 315 in general, because of its greater bandwidth. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 310720 (1229%)

Texel Rate

The GeForce GTX 780 Ti will be much (more or less 2000%) more effective at anisotropic filtering than the GeForce GT 315. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 200000 (2000%)

Pixel Rate

The GeForce GTX 780 Ti will be a lot (more or less 740%) more effective at anti-aliasing than the GeForce GT 315, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 37000 (740%)

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 (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.