GeForce GTS 250 1GB vs GeForce GTX Titan Black

Intro

Compare those specs to the GeForce GTX Titan Black, which comes with a clock frequency of 889 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It is made up of 2880 SPUs, 240 TAUs, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

The GeForce GTX Titan Black should in theory be much faster than the GeForce GTS 250 1GB in general. (explain)

GeForce GTX Titan Black		336000 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 265600 (377%)

Texel Rate

The GeForce GTX Titan Black is much (approximately 352%) more effective at AF than the GeForce GTS 250 1GB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 166128 (352%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan Black is the winner, by a large margin. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
GeForce GTS 250 1GB		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 maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most 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 amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.