GeForce GTS 250 512MB vs GeForce GTX Titan Black

Intro

Compare all of that to the GeForce GTX Titan Black, which uses a 28 nm design. nVidia has clocked the core frequency at 889 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this specific model. It features 2880 SPUs as well as 240 TAUs and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 512MB		145 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan Black should theoretically be quite a bit superior to the GeForce GTS 250 512MB in general. (explain)

GeForce GTX Titan Black		336000 MB/sec
GeForce GTS 250 512MB		70400 MB/sec
	Difference: 265600 (377%)

Texel Rate

The GeForce GTX Titan Black is quite a bit (about 352%) faster with regards to texture filtering than the GeForce GTS 250 512MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
GeForce GTS 250 512MB		47232 Mtexels/sec
	Difference: 166128 (352%)

Pixel Rate

The GeForce GTX Titan Black should be much (about 261%) better at AA than the GeForce GTS 250 512MB, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
GeForce GTS 250 512MB		11808 Mpixels/sec
	Difference: 30864 (261%)

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 megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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