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GeForce GTX 275 vs GeForce GTX 470

Intro

The GeForce GTX 275 has a GPU core speed of 633 MHz, and the 896 MB of GDDR3 RAM is set to run at 1134 MHz through a 448-bit bus. It also is made up of 240 Stream Processors, 80 TAUs, and 28 ROPs.

Compare those specs to the GeForce GTX 470, which comes with core speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs as well as 56 Texture Address Units and 40 Rasterization Operator Units.

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

In theory, the GeForce GTX 470 should be just a bit faster than the GeForce GTX 275 overall. (explain)

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

Texel Rate

The GeForce GTX 275 should be quite a bit (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

If using high levels of AA is important to you, then the GeForce GTX 470 is a better choice, and very much so. (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

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.

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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many 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.

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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