GeForce GT 315 vs GeForce GTX 560 Ti

Intro

Compare those specifications to the GeForce GTX 560 Ti, which has clock speeds of 822 MHz on the GPU, and 1002 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 118 Watts (227%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti should theoretically be quite a bit better than the GeForce GT 315 in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 102976 (407%)

Texel Rate

The GeForce GTX 560 Ti will be quite a bit (approximately 426%) faster with regards to anisotropic filtering than the GeForce GT 315. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 42608 (426%)

Pixel Rate

The GeForce GTX 560 Ti will be a lot (more or less 426%) better at FSAA than the GeForce GT 315, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 21304 (426%)

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 max amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.