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GeForce GTX 580 3GB vs Radeon R9 285

Intro

The GeForce GTX 580 3GB comes with a GPU clock speed of 772 MHz, and the 3072 MB of GDDR5 memory is set to run at 1002 MHz through a 384-bit bus. It also is comprised of 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Compare those specifications to the Radeon R9 285, which comes with GPU core speed of 918 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also is comprised of 1792 Stream Processors, 112 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285 190 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 54 Watts (28%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 3GB should be a bit faster than the Radeon R9 285 in general. (explain)

GeForce GTX 580 3GB 192384 MB/sec
Radeon R9 285 176000 MB/sec
Difference: 16384 (9%)

Texel Rate

The Radeon R9 285 will be a lot (about 108%) faster with regards to texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon R9 285 102816 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 53408 (108%)

Pixel Rate

The GeForce GTX 580 3GB is much (more or less 26%) faster with regards to full screen anti-aliasing than the Radeon R9 285, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon R9 285 29376 Mpixels/sec
Difference: 7680 (26%)

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 285

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 285
Manufacturer nVidia AMD
Year November 2010 September 2014
Code Name GF110 Tonga PRO
Memory 3072 MB 2048 MB
Core Speed 772 MHz 918 MHz
Memory Speed 4008 MHz 5500 MHz
Power (Max TDP) 244 watts 190 watts
Bandwidth 192384 MB/sec 176000 MB/sec
Texel Rate 49408 Mtexels/sec 102816 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 29376 Mpixels/sec
Unified Shaders 512 1792
Texture Mapping Units 64 112
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 5000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.4

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 580 3GB

Amazon.com

Check prices at:

Radeon R9 285

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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