GeForce GTS 250 1GB vs GeForce GTX 950

Intro

Compare all of that to the GeForce GTX 950, which comes with GPU core speed of 1024 MHz, and 2048 MB of GDDR5 memory set to run at 1652 MHz through a 128-bit bus. It also features 768 Stream Processors, 48 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 55 Watts (61%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 950 should in theory be much superior to the GeForce GTS 250 1GB in general. (explain)

GeForce GTX 950		105728 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 35328 (50%)

Texel Rate

The GeForce GTX 950 will be a little bit (more or less 4%) faster with regards to texture filtering than the GeForce GTS 250 1GB. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 1920 (4%)

Pixel Rate

The GeForce GTX 950 should be much (about 178%) more effective at anti-aliasing than the GeForce GTS 250 1GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 20960 (178%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.