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GeForce GTX 260 Core 216 vs GeForce GTX 560 Ti

Intro

The GeForce GTX 260 Core 216 comes with a GPU clock speed of 576 MHz, and the 896 MB of GDDR3 memory is set to run at 999 MHz through a 448-bit bus. It also is made up of 216 Stream Processors, 72 Texture Address Units, and 28 Raster Operation Units.

Compare those specs to the GeForce GTX 560 Ti, which comes with GPU clock speed of 822 MHz, and 1024 MB of GDDR5 memory set to run at 1002 MHz through a 256-bit bus. It also is made up of 384 SPUs, 64 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti		170 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 32 Watts (19%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti should be 15% faster than the GeForce GTX 260 Core 216 overall, due to its greater data rate. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce GTX 260 Core 216		111888 MB/sec
	Difference: 16368 (15%)

Texel Rate

The GeForce GTX 560 Ti will be much (approximately 27%) more effective at texture filtering than the GeForce GTX 260 Core 216. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 11136 (27%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti is superior to the GeForce GTX 260 Core 216, by far. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 10176 (63%)

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

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GeForce GTX 260 Core 216

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GeForce GTX 560 Ti

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Specifications

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Model	GeForce GTX 260 Core 216	GeForce GTX 560 Ti
Manufacturer	nVidia	nVidia
Year	September 16, 2008	January 2011
Code Name	G200	GF114
Memory	896 MB	1024 MB
Core Speed	576 MHz	822 MHz
Memory Speed	1998 MHz	4008 MHz
Power (Max TDP)	202 watts	170 watts
Bandwidth	111888 MB/sec	128256 MB/sec
Texel Rate	41472 Mtexels/sec	52608 Mtexels/sec
Pixel Rate	16128 Mpixels/sec	26304 Mpixels/sec
Unified Shaders	216	384
Texture Mapping Units	72	64
Render Output Units	28	32
Bus Type	GDDR3	GDDR5
Bus Width	448-bit	256-bit
Fab Process	65 nm	40 nm
Transistors	1400 million	1950 million
Bus	PCIe x16 2.0	PCIe x16
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better 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 maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

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