GeForce GT 450 (OEM) vs GeForce GTX 950M

Intro

Compare all that to the GeForce GTX 950M, which uses a 28 nm design. nVidia has set the core speed at 914 MHz. The DDR3 RAM is set to run at a speed of 1000 MHz on this model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 51 Watts (93%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should in theory be much better than the GeForce GTX 950M in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The GeForce GTX 950M will be quite a bit (more or less 93%) more effective at AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 950M		36560 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 17600 (93%)

Pixel Rate

The GeForce GT 450 (OEM) is quite a bit (more or less 30%) more effective at AA than the GeForce GTX 950M, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 950M		14624 Mpixels/sec
	Difference: 4336 (30%)

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 (counted in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.