GeForce GT 320 vs GeForce GTX 950M

Intro

Compare those specs to the GeForce GTX 950M, which has GPU clock speed of 914 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 950M		55 Watts
	Difference: 12 Watts (28%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 950M should be 27% faster than the GeForce GT 320 in general, because of its higher bandwidth. (explain)

GeForce GTX 950M		32000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 6720 (27%)

Texel Rate

The GeForce GTX 950M should be a lot (about 182%) faster with regards to texture filtering than the GeForce GT 320. (explain)

GeForce GTX 950M		36560 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 23600 (182%)

Pixel Rate

The GeForce GTX 950M should be a lot (about 239%) better at full screen anti-aliasing than the GeForce GT 320, and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 950M		14624 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 10304 (239%)

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 max amount of data (in units of megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.