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GeForce GTX 470 vs GeForce GTX 550 Ti

Intro

The GeForce GTX 470 features a clock speed of 607 MHz and a GDDR5 memory frequency of 837 MHz. It also makes use of 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 all of that to the GeForce GTX 550 Ti, which comes with a clock frequency of 900 MHz and a GDDR5 memory frequency of 1026 MHz. It also features a 192-bit memory bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 TAUs, and 24 ROPs.

Display Graphs

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(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti 116 Watts
GeForce GTX 470 215 Watts
Difference: 99 Watts (85%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should theoretically be much better than the GeForce GTX 550 Ti in general. (explain)

GeForce GTX 470 133920 MB/sec
GeForce GTX 550 Ti 98496 MB/sec
Difference: 35424 (36%)

Texel Rate

The GeForce GTX 470 should be a little bit (more or less 18%) more effective at AF than the GeForce GTX 550 Ti. (explain)

GeForce GTX 470 33992 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 5192 (18%)

Pixel Rate

The GeForce GTX 470 is a small bit (about 12%) more effective at full screen anti-aliasing than the GeForce GTX 550 Ti, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 470 24280 Mpixels/sec
GeForce GTX 550 Ti 21600 Mpixels/sec
Difference: 2680 (12%)

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

Amazon.com

GeForce GTX 550 Ti

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

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Model GeForce GTX 470 GeForce GTX 550 Ti
Manufacturer nVidia nVidia
Year March 2010 March 2011
Code Name GF100 GF116
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1280 MB 1024 MB
Core Speed 607 MHz 900 MHz
Shader Speed 1215 MHz 1800 MHz
Memory Speed 837 MHz (3348 MHz effective) 1026 MHz (4104 MHz effective)
Unified Shaders 448 192
Texture Mapping Units 56 32
Render Output Units 40 24
Bus Type GDDR5 GDDR5
Bus Width 320-bit 192-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 215 watts 116 watts
Shader Model 5.0 5.0
Bandwidth 133920 MB/sec 98496 MB/sec
Texel Rate 33992 Mtexels/sec 28800 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 21600 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Comments

3 Responses to “GeForce GTX 470 vs GeForce GTX 550 Ti”
Dave says:
why the hell would they design 550 to be worse than 480?
rob says:
Because the average user wont want to spend the price of a 480. 550 gives adequate performance for most people to use. 480 is STILL more expensive than the 550 as well.
Bogdan says:
So... twice the power consumption, ~10% more potent and ~130% more expensive... what's the point of buying a gtx470? :)

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