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GeForce GTX 580 3GB vs Radeon R9 270X

Intro

The GeForce GTX 580 3GB makes use of a 40 nm design. nVidia has clocked the core speed at 772 MHz. The GDDR5 RAM runs at a speed of 1002 MHz on this specific model. It features 512 SPUs along with 64 Texture Address Units and 48 ROPs.

Compare those specifications to the Radeon R9 270X, which comes with a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 64 Watts (36%)

Memory Bandwidth

The GeForce GTX 580 3GB should in theory be a small bit faster than the Radeon R9 270X in general. (explain)

GeForce GTX 580 3GB 192384 MB/sec
Radeon R9 270X 179200 MB/sec
Difference: 13184 (7%)

Texel Rate

The Radeon R9 270X will be much (about 62%) faster with regards to texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon R9 270X 80000 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 30592 (62%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 580 3GB is superior to the Radeon R9 270X, but only just. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon R9 270X 32000 Mpixels/sec
Difference: 5056 (16%)

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 580 3GB

Amazon.com

Radeon R9 270X

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

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Model GeForce GTX 580 3GB Radeon R9 270X
Manufacturer nVidia AMD
Year November 2010 October 2013
Code Name GF110 Curacao XT
Memory 3072 MB 2048 MB
Core Speed 772 MHz 1000 MHz
Memory Speed 4008 MHz 5600 MHz
Power (Max TDP) 244 watts 180 watts
Bandwidth 192384 MB/sec 179200 MB/sec
Texel Rate 49408 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 512 1280
Texture Mapping Units 64 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 2800 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant 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 580 3GB

Amazon.com

Radeon R9 270X

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.

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