GeForce GT 315 vs GeForce GTX 950

Intro

Compare those specifications to the GeForce GTX 950, which has core speeds of 1024 MHz on the GPU, and 1652 MHz on the 2048 MB of GDDR5 RAM. It features 768 SPUs along with 48 TAUs and 32 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 950		90 Watts
	Difference: 38 Watts (73%)

Memory Bandwidth

The GeForce GTX 950, in theory, should perform quite a bit faster than the GeForce GT 315 in general. (explain)

GeForce GTX 950		105728 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 80448 (318%)

Texel Rate

The GeForce GTX 950 will be a lot (about 392%) better at anisotropic filtering than the GeForce GT 315. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 39152 (392%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 950 is the winner, by a large margin. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 27768 (555%)

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 data (in units of megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.