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GeForce GTX 560 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 560 features core speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 should perform a bit faster than the Radeon HD 4870 1GB overall. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 12928 (11%)

Texel Rate

The GeForce GTX 560 will be much (more or less 51%) more effective at AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 15360 (51%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 is superior to the Radeon HD 4870 1GB, and very much so. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 13920 (116%)

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

Display Prices

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GeForce GTX 560

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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

Display Specifications

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Model GeForce GTX 560 Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year May 2011 Jun 25, 2008
Code Name GF114 RV770 XT
Memory 1024 MB 1024 MB
Core Speed 810 MHz 750 MHz
Memory Speed 4004 MHz 3600 MHz
Power (Max TDP) 150 watts 150 watts
Bandwidth 128128 MB/sec 115200 MB/sec
Texel Rate 45360 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe 2.0 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 largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen 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 texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 560

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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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