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GeForce 8800 GTX vs Radeon R9 M270X

Intro

The GeForce 8800 GTX makes use of a 90 nm design. nVidia has set the core speed at 575 MHz. The GDDR3 memory works at a frequency of 900 MHz on this card. It features 128 SPUs as well as 64 Texture Address Units and 24 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M270X, which makes use of a 28 nm design. AMD has set the core speed at 725 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this particular model. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce 8800 GTX should be a little bit faster than the Radeon R9 M270X overall. (explain)

GeForce 8800 GTX 86400 MB/sec
Radeon R9 M270X 72000 MB/sec
Difference: 14400 (20%)

Texel Rate

The GeForce 8800 GTX will be much (about 27%) faster with regards to anisotropic filtering than the Radeon R9 M270X. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
Radeon R9 M270X 29000 Mtexels/sec
Difference: 7800 (27%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 8800 GTX is a better choice, not by a very large margin though. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
Radeon R9 M270X 11600 Mpixels/sec
Difference: 2200 (19%)

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 8800 GTX

Amazon.com

Check prices at:

Radeon R9 M270X

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 8800 GTX Radeon R9 M270X
Manufacturer nVidia AMD
Year Nov 2006 May 1 2014
Code Name G80 Venus XT
Memory 768 MB 2048 MB
Core Speed 575 MHz 725 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 155 watts (Unknown) watts
Bandwidth 86400 MB/sec 72000 MB/sec
Texel Rate 36800 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 128 640
Texture Mapping Units 64 40
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video 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 that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few 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 8800 GTX

Amazon.com

Check prices at:

Radeon R9 M270X

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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