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GeForce GTX 560 vs Radeon HD 7870


Intro

The GeForce GTX 560 makes use of a 40 nm design. nVidia has clocked the core speed at 810 MHz. The GDDR5 memory works at a frequency of 1001 MHz on this specific card. It features 336 SPUs as well as 56 TAUs and 32 ROPs.

Compare all that to the Radeon HD 7870, which has core clock speeds of 1000 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7870 6230 points
GeForce GTX 560 3030 points
Difference: 3200 (106%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 150 Watts
Radeon HD 7870 175 Watts
Difference: 25 Watts (17%)

Memory Bandwidth

The Radeon HD 7870, in theory, should perform a bit faster than the GeForce GTX 560 overall. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTX 560 128128 MB/sec
Difference: 25472 (20%)

Texel Rate

The Radeon HD 7870 should be much (more or less 76%) better at texture filtering than the GeForce GTX 560. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTX 560 45360 Mtexels/sec
Difference: 34640 (76%)

Pixel Rate

The Radeon HD 7870 should be much (more or less 23%) more effective at full screen anti-aliasing than the GeForce GTX 560, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTX 560 25920 Mpixels/sec
Difference: 6080 (23%)

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

Radeon HD 7870

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

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Model GeForce GTX 560 Radeon HD 7870
Manufacturer nVidia AMD
Year May 2011 March 2012
Code Name GF114 Pitcairn XT
Memory 1024 MB 2048 MB
Core Speed 810 MHz 1000 MHz
Memory Speed 4004 MHz 4800 MHz
Power (Max TDP) 150 watts 175 watts
Bandwidth 128128 MB/sec 153600 MB/sec
Texel Rate 45360 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 336 1280
Texture Mapping Units 56 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 1950 million 2800 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 560

Amazon.com

Radeon HD 7870

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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