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GeForce GTX 275 vs GeForce GTX 470

Intro

The GeForce GTX 275 comes with a GPU clock speed of 633 MHz, and the 896 MB of GDDR3 memory is set to run at 1134 MHz through a 448-bit bus. It also is made up of 240 SPUs, 80 TAUs, and 28 ROPs.

Compare that to the GeForce GTX 470, which has a clock frequency of 607 MHz and a GDDR5 memory speed of 837 MHz. It also makes use of a 320-bit bus, and uses a 40 nm design. It is comprised of 448 SPUs, 56 TAUs, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 470 215 Watts
GeForce GTX 275 219 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should in theory be a little bit better than the GeForce GTX 275 in general. (explain)

GeForce GTX 470 133920 MB/sec
GeForce GTX 275 127008 MB/sec
Difference: 6912 (5%)

Texel Rate

The GeForce GTX 275 will be much (approximately 49%) more effective at anisotropic filtering than the GeForce GTX 470. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 16648 (49%)

Pixel Rate

The GeForce GTX 470 is a lot (more or less 37%) more effective at FSAA than the GeForce GTX 275, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 470 24280 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 6556 (37%)

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 275

Amazon.com

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GeForce GTX 470

Amazon.com

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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

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Model GeForce GTX 275 GeForce GTX 470
Manufacturer nVidia nVidia
Year April 9, 2009 March 2010
Code Name G200b GF100
Memory 896 MB 1280 MB
Core Speed 633 MHz 607 MHz
Memory Speed 2268 MHz 3348 MHz
Power (Max TDP) 219 watts 215 watts
Bandwidth 127008 MB/sec 133920 MB/sec
Texel Rate 50640 Mtexels/sec 33992 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 24280 Mpixels/sec
Unified Shaders 240 448
Texture Mapping Units 80 56
Render Output Units 28 40
Bus Type GDDR3 GDDR5
Bus Width 448-bit 320-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 3000 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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 are applied in one second. This is worked out 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 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 number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 275

Amazon.com

Check prices at:

GeForce GTX 470

Amazon.com

Check prices at:

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.

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