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GeForce GTX 580 vs Radeon HD 7850


The GeForce GTX 580 has clock speeds of 772 MHz on the GPU, and 1002 MHz on the 1536 MB of GDDR5 RAM. It features 512 SPUs along with 64 Texture Address Units and 48 Rasterization Operator Units.

Compare all of that to the Radeon HD 7850, which makes use of a 28 nm design. AMD has set the core frequency at 860 MHz. The GDDR5 memory works at a frequency of 1200 MHz on this specific model. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
GeForce GTX 580 244 Watts
Difference: 114 Watts (88%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 should in theory be quite a bit superior to the Radeon HD 7850 overall. (explain)

GeForce GTX 580 192384 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 38784 (25%)

Texel Rate

The Radeon HD 7850 should be a bit (approximately 11%) faster with regards to texture filtering than the GeForce GTX 580. (explain)

Radeon HD 7850 55040 Mtexels/sec
GeForce GTX 580 49408 Mtexels/sec
Difference: 5632 (11%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 580 is superior to the Radeon HD 7850, by a large margin. (explain)

GeForce GTX 580 37056 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 9536 (35%)

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

Radeon HD 7850

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.


Display Specifications

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Model GeForce GTX 580 Radeon HD 7850
Manufacturer nVidia AMD
Year November 2010 March 2012
Code Name GF110 Pitcairn Pro
Memory 1536 MB 2048 MB
Core Speed 772 MHz 860 MHz
Memory Speed 4008 MHz 4800 MHz
Power (Max TDP) 244 watts 130 watts
Bandwidth 192384 MB/sec 153600 MB/sec
Texel Rate 49408 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 512 1024
Texture Mapping Units 64 64
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 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 applied in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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 potential to reach the maximum fill rate.


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