GeForce GT 315 vs GeForce GTX 460 SE

Intro

Compare that to the GeForce GTX 460 SE, which has a GPU core clock speed of 650 MHz, and 1024 MB of GDDR5 memory set to run at 850 MHz through a 256-bit bus. It also is comprised of 288 SPUs, 48 TAUs, 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 SE		150 Watts
	Difference: 98 Watts (188%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 SE should theoretically be much better than the GeForce GT 315 overall. (explain)

GeForce GTX 460 SE		108800 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 83520 (330%)

Texel Rate

The GeForce GTX 460 SE should be much (about 212%) faster with regards to AF than the GeForce GT 315. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 21200 (212%)

Pixel Rate

The GeForce GTX 460 SE will be a lot (more or less 316%) faster with regards to anti-aliasing than the GeForce GT 315, and will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 15800 (316%)

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 information (in units of MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 are processed in one second. This number is worked out by multiplying the total number 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 most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.