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GeForce GTX 580 3GB vs Radeon R9 270

Intro

The GeForce GTX 580 3GB features a clock speed of 772 MHz and a GDDR5 memory frequency of 1002 MHz. It also makes use of a 384-bit memory bus, and makes use of a 40 nm design. It is comprised of 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Compare all that to the Radeon R9 270, which has a core clock speed of 900 MHz and a GDDR5 memory frequency of 1400 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 94 Watts (63%)

Memory Bandwidth

The GeForce GTX 580 3GB should theoretically perform just a bit faster than the Radeon R9 270 overall. (explain)

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

Texel Rate

The Radeon R9 270 should be quite a bit (approximately 46%) more effective at texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon R9 270 72000 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 22592 (46%)

Pixel Rate

The GeForce GTX 580 3GB should be much (approximately 29%) faster with regards to full screen anti-aliasing than the Radeon R9 270, and will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 8256 (29%)

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

Check prices at:

Radeon R9 270

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 580 3GB Radeon R9 270
Manufacturer nVidia AMD
Year November 2010 November 2013
Code Name GF110 Curacao Pro
Memory 3072 MB 2048 MB
Core Speed 772 MHz 900 MHz
Memory Speed 4008 MHz 5600 MHz
Power (Max TDP) 244 watts 150 watts
Bandwidth 192384 MB/sec 179200 MB/sec
Texel Rate 49408 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 28800 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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 can be applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 fill 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 get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 580 3GB

Amazon.com

Check prices at:

Radeon R9 270

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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