GeForce GT 315 vs GeForce GTX 460 1GB

Intro

Compare all of that to the GeForce GTX 460 1GB, which comes with GPU clock speed of 675 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 108 Watts (208%)

Memory Bandwidth

The GeForce GTX 460 1GB, in theory, should be much faster than the GeForce GT 315 overall. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 89920 (356%)

Texel Rate

The GeForce GTX 460 1GB should be much (approximately 278%) more effective at AF than the GeForce GT 315. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 27800 (278%)

Pixel Rate

The GeForce GTX 460 1GB will be much (about 332%) faster with regards to anti-aliasing than the GeForce GT 315, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 460 1GB		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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its 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 the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.