GeForce GT 315 vs GeForce GTX 560

Intro

Compare those specs to the GeForce GTX 560, which features GPU clock speed of 810 MHz, and 1024 MB of GDDR5 RAM running at 1001 MHz through a 256-bit bus. It also is made up of 336 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 560		150 Watts
	Difference: 98 Watts (188%)

Memory Bandwidth

The GeForce GTX 560 should theoretically perform a lot faster than the GeForce GT 315 in general. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 102848 (407%)

Texel Rate

The GeForce GTX 560 should be much (more or less 354%) faster with regards to anisotropic filtering than the GeForce GT 315. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 35360 (354%)

Pixel Rate

The GeForce GTX 560 is much (more or less 418%) faster with regards to anti-aliasing than the GeForce GT 315, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 20920 (418%)

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 largest amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.