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GeForce GTX 580 vs Radeon HD 4850 512MB


The GeForce GTX 580 features 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 ROPs.

Compare all of that to the Radeon HD 4850 512MB, which features GPU clock speed of 625 MHz, and 512 MB of GDDR3 RAM running at 993 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB 110 Watts
GeForce GTX 580 244 Watts
Difference: 134 Watts (122%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should theoretically be much better than the Radeon HD 4850 512MB overall. (explain)

GeForce GTX 580 192384 MB/sec
Radeon HD 4850 512MB 63552 MB/sec
Difference: 128832 (203%)

Texel Rate

The GeForce GTX 580 will be much (about 98%) more effective at anisotropic filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 580 49408 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 24408 (98%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 580 is a better choice, and very much so. (explain)

GeForce GTX 580 37056 Mpixels/sec
Radeon HD 4850 512MB 10000 Mpixels/sec
Difference: 27056 (271%)

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 4850 512MB

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 4850 512MB
Manufacturer nVidia AMD
Year November 2010 Jun 25, 2008
Code Name GF110 RV770 PRO
Memory 1536 MB 512 MB
Core Speed 772 MHz 625 MHz
Memory Speed 4008 MHz 1986 MHz
Power (Max TDP) 244 watts 110 watts
Bandwidth 192384 MB/sec 63552 MB/sec
Texel Rate 49408 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 512 800(160x5)
Texture Mapping Units 64 40
Render Output Units 48 16
Bus Type GDDR5 GDDR3
Bus Width 384-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.


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