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GeForce GTX 580 3GB vs Radeon HD 4870 1GB

Intro

The GeForce GTX 580 3GB features 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 Texture Address Units, and 48 Raster Operation Units.

Compare those specs to the Radeon HD 4870 1GB, which has GPU core speed of 750 MHz, and 1024 MB of GDDR5 RAM running at 900 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 94 Watts (63%)

Memory Bandwidth

In theory, the GeForce GTX 580 3GB should be a lot faster than the Radeon HD 4870 1GB overall. (explain)

GeForce GTX 580 3GB 192384 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 77184 (67%)

Texel Rate

The GeForce GTX 580 3GB should be much (approximately 65%) more effective at texture filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 580 3GB 49408 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 19408 (65%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 580 3GB is the winner, and very much so. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 25056 (209%)

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 HD 4870 1GB

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 HD 4870 1GB
Manufacturer nVidia AMD
Year November 2010 Jun 25, 2008
Code Name GF110 RV770 XT
Memory 3072 MB 1024 MB
Core Speed 772 MHz 750 MHz
Memory Speed 4008 MHz 3600 MHz
Power (Max TDP) 244 watts 150 watts
Bandwidth 192384 MB/sec 115200 MB/sec
Texel Rate 49408 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 37056 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 512 800(160x5)
Texture Mapping Units 64 40
Render Output Units 48 16
Bus Type GDDR5 GDDR5
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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 580 3GB

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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