GeForce GT 315 vs GeForce GTX 560 Ti 448

Intro

Compare those specs to the GeForce GTX 560 Ti 448, which features core clock speeds of 732 MHz on the GPU, and 900 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs as well as 56 TAUs and 40 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 448		210 Watts
	Difference: 158 Watts (304%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti 448 should in theory be a lot better than the GeForce GT 315 in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 118720 (470%)

Texel Rate

The GeForce GTX 560 Ti 448 will be quite a bit (more or less 310%) better at texture filtering than the GeForce GT 315. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 30992 (310%)

Pixel Rate

The GeForce GTX 560 Ti 448 should be much (approximately 486%) more effective at FSAA than the GeForce GT 315, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 24280 (486%)

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 maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling 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 can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.