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GeForce GTX 470 vs GeForce GTX 560 Ti 448

Intro

The GeForce GTX 470 comes with a clock frequency of 607 MHz and a GDDR5 memory frequency of 837 MHz. It also features a 320-bit bus, and makes use of a 40 nm design. It is comprised of 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Compare those specs to the GeForce GTX 560 Ti 448, which has a GPU core clock speed of 732 MHz, and 1280 MB of GDDR5 RAM running at 900 MHz through a 320-bit bus. It also features 448 SPUs, 56 TAUs, and 40 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 560 Ti 448		4200 points
GeForce GTX 470		2937 points
	Difference: 1263 (43%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
GeForce GTX 470		215 Watts
	Difference: 5 Watts (2%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 Ti 448 should be a small bit faster than the GeForce GTX 470 overall. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTX 470		133920 MB/sec
	Difference: 10080 (8%)

Texel Rate

The GeForce GTX 560 Ti 448 will be a lot (approximately 21%) faster with regards to AF than the GeForce GTX 470. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 7000 (21%)

Pixel Rate

The GeForce GTX 560 Ti 448 will be quite a bit (more or less 21%) more effective at FSAA than the GeForce GTX 470, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 470		24280 Mpixels/sec
	Difference: 5000 (21%)

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 470

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GeForce GTX 560 Ti 448

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Specifications

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Model	GeForce GTX 470	GeForce GTX 560 Ti 448
Manufacturer	nVidia	nVidia
Year	March 2010	December 2011
Code Name	GF100	GF110
Memory	1280 MB	1280 MB
Core Speed	607 MHz	732 MHz
Memory Speed	3348 MHz	3600 MHz
Power (Max TDP)	215 watts	210 watts
Bandwidth	133920 MB/sec	144000 MB/sec
Texel Rate	33992 Mtexels/sec	40992 Mtexels/sec
Pixel Rate	24280 Mpixels/sec	29280 Mpixels/sec
Unified Shaders	448	448
Texture Mapping Units	56	56
Render Output Units	40	40
Bus Type	GDDR5	GDDR5
Bus Width	320-bit	320-bit
Fab Process	40 nm	40 nm
Transistors	3000 million	3000 million
Bus	PCIe x16	PCIe 2.0 x16
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 4.1	OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the potential to reach the maximum fill rate.

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