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GeForce GTX 560 Ti vs Radeon HD 7870

Intro

The GeForce GTX 560 Ti uses a 40 nm design. nVidia has set the core speed at 822 MHz. The GDDR5 RAM runs at a speed of 1002 MHz on this card. It features 384 SPUs as well as 64 TAUs and 32 ROPs.

Compare all that to the Radeon HD 7870, which features a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 170 Watts
Radeon HD 7870 175 Watts
Difference: 5 Watts (3%)

Memory Bandwidth

The Radeon HD 7870 should theoretically perform just a bit faster than the GeForce GTX 560 Ti in general. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTX 560 Ti 128256 MB/sec
Difference: 25344 (20%)

Texel Rate

The Radeon HD 7870 is quite a bit (more or less 52%) faster with regards to anisotropic filtering than the GeForce GTX 560 Ti. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTX 560 Ti 52608 Mtexels/sec
Difference: 27392 (52%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7870 is superior to the GeForce GTX 560 Ti, and very much so. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTX 560 Ti 26304 Mpixels/sec
Difference: 5696 (22%)

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 Ti

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 Ti Radeon HD 7870
Manufacturer nVidia AMD
Year January 2011 March 2012
Code Name GF114 Pitcairn XT
Memory 1024 MB 2048 MB
Core Speed 822 MHz 1000 MHz
Memory Speed 4008 MHz 4800 MHz
Power (Max TDP) 170 watts 175 watts
Bandwidth 128256 MB/sec 153600 MB/sec
Texel Rate 52608 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 384 1280
Texture Mapping Units 64 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 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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