GeForce GT 315 vs GeForce GTX 460 2GB

Intro

Compare those specifications to the GeForce GTX 460 2GB, which features GPU clock speed of 675 MHz, and 2048 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 336 SPUs, 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 460 2GB		160 Watts
	Difference: 108 Watts (208%)

Memory Bandwidth

In theory, the GeForce GTX 460 2GB should perform much faster than the GeForce GT 315 overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 89920 (356%)

Texel Rate

The GeForce GTX 460 2GB will be much (approximately 278%) better at AF than the GeForce GT 315. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 27800 (278%)

Pixel Rate

The GeForce GTX 460 2GB should be quite a bit (approximately 332%) faster with regards to FSAA than the GeForce GT 315, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 16600 (332%)

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 largest amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 worked out by multiplying the total amount of texture units of the card 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 amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.