GeForce GT 450 (OEM) vs GeForce GTX 950

Intro

Compare those specifications to the GeForce GTX 950, which comes with a GPU core clock speed of 1024 MHz, and 2048 MB of GDDR5 RAM running at 1652 MHz through a 128-bit bus. It also features 768 SPUs, 48 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 16 Watts (18%)

Memory Bandwidth

The GeForce GTX 950 should theoretically perform a little bit faster than the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 950		105728 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 9728 (10%)

Texel Rate

The GeForce GTX 950 should be much (approximately 159%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 30192 (159%)

Pixel Rate

The GeForce GTX 950 should be a lot (about 73%) better at anti-aliasing than the GeForce GT 450 (OEM), and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 13808 (73%)

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 data (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.