GeForce GTS 250 1GB vs GeForce GTX 560 Ti

Intro

Compare those specs to the GeForce GTX 560 Ti, which uses a 40 nm design. nVidia has set the core frequency at 822 MHz. The GDDR5 memory works at a speed of 1002 MHz on this specific model. It features 384 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 250 1GB		145 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

The GeForce GTX 560 Ti, in theory, should perform a lot faster than the GeForce GTS 250 1GB overall. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 57856 (82%)

Texel Rate

The GeForce GTX 560 Ti is just a bit (more or less 11%) faster with regards to AF than the GeForce GTS 250 1GB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce GTS 250 1GB		47232 Mtexels/sec
	Difference: 5376 (11%)

Pixel Rate

The GeForce GTX 560 Ti will be much (about 123%) faster with regards to anti-aliasing than the GeForce GTS 250 1GB, and also able to handle higher screen resolutions better. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GTS 250 1GB		11808 Mpixels/sec
	Difference: 14496 (123%)

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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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