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GeForce GTX 275 vs GeForce GTX 470

Intro

The GeForce GTX 275 features clock speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 memory. It features 240 SPUs as well as 80 Texture Address Units and 28 Rasterization Operator Units.

Compare those specs to the GeForce GTX 470, which has a core clock frequency of 607 MHz and a GDDR5 memory speed of 837 MHz. It also uses a 320-bit memory bus, and makes use of a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

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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 a small 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 a high screen resolution is important to you, then the GeForce GTX 470 is superior to the GeForce GTX 275, by far. (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 max amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units by the core clock 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 per second.

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