GeForce GT 315 vs GeForce GTX 860M

Intro

Compare those specifications to the GeForce GTX 860M, which comes with core speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1152 SPUs as well as 96 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GT 315		52 Watts
	Difference: 7 Watts (16%)

Memory Bandwidth

In theory, the GeForce GTX 860M should perform a lot faster than the GeForce GT 315 in general. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 38720 (153%)

Texel Rate

The GeForce GTX 860M will be a lot (about 665%) more effective at AF than the GeForce GT 315. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 66512 (665%)

Pixel Rate

The GeForce GTX 860M will be much (approximately 155%) faster with regards to anti-aliasing than the GeForce GT 315, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 7752 (155%)

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 information (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed 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 better the texel rate, the better the video 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 maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.