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GeForce GTX 470 vs GeForce GTX 550 Ti

Intro

The GeForce GTX 470 features a GPU core speed of 607 MHz, and the 1280 MB of GDDR5 RAM is set to run at 837 MHz through a 320-bit bus. It also is made up of 448 Stream Processors, 56 TAUs, and 40 ROPs.

Compare that to the GeForce GTX 550 Ti, which comes with GPU core speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1026 MHz through a 192-bit bus. It also is comprised of 192 Stream Processors, 32 TAUs, and 24 ROPs.

(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

The GeForce GTX 470 should theoretically perform quite a bit faster than the GeForce GTX 550 Ti overall. (explain)

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

Texel Rate

The GeForce GTX 470 is a small bit (approximately 18%) faster with regards to texture filtering 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

If running with lots of anti-aliasing is important to you, then the GeForce GTX 470 is the winner, though not by far. (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

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

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the 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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