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GeForce GTX 470 vs GeForce GTX 550 Ti

Intro

The GeForce GTX 470 comes with a GPU core clock speed of 607 MHz, and the 1280 MB of GDDR5 memory runs at 837 MHz through a 320-bit bus. It also 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 makes use of a 40 nm design. nVidia has set the core speed at 900 MHz. The GDDR5 memory works at a speed of 1026 MHz on this particular model. It features 192 SPUs along with 32 Texture Address Units 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

In theory, the GeForce GTX 470 is 36% quicker than the GeForce GTX 550 Ti in general, due to its greater bandwidth. (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%) better at anisotropic 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

The GeForce GTX 470 should be a bit (more or less 12%) better at AA than the GeForce GTX 550 Ti, and also should be able to handle higher resolutions better. (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 largest amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock 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 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 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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