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GeForce GTX 560 vs Radeon HD 4870 512MB

Intro

The GeForce GTX 560 has a core clock speed of 810 MHz and a GDDR5 memory speed of 1001 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 336 SPUs, 56 Texture Address Units, and 32 ROPs.

Compare those specifications to the Radeon HD 4870 512MB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

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 512MB in general. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4870 512MB 115200 MB/sec
Difference: 12928 (11%)

Texel Rate

The GeForce GTX 560 is quite a bit (more or less 51%) better at texture filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 15360 (51%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 is a better choice, and very much so. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4870 512MB 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

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GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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 560 Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year May 2011 Jun 25, 2008
Code Name GF114 RV770 XT
Memory 1024 MB 512 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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, 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 the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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