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GeForce GTX 580 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 580 features a core clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also uses a 384-bit bus, and uses a 40 nm design. It is comprised of 512 SPUs, 64 TAUs, and 48 ROPs.

Compare that to the Radeon HD 4870 1GB, which features GPU core speed of 750 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should in theory be much better than the Radeon HD 4870 1GB overall. (explain)

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

Texel Rate

The GeForce GTX 580 should be much (approximately 65%) faster with regards to anisotropic filtering than the Radeon HD 4870 1GB. (explain)

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

Pixel Rate

The GeForce GTX 580 should be a lot (approximately 209%) better at FSAA than the Radeon HD 4870 1GB, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 580 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

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 Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year November 2010 Jun 25, 2008
Code Name GF110 RV770 XT
Memory 1536 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 data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card 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 amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 580

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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