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GeForce GTX 560 Ti vs Radeon HD 7870

Intro

The GeForce GTX 560 Ti has core speeds of 822 MHz on the GPU, and 1002 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Compare those specifications to the Radeon HD 7870, which features GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1200 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 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

Performance-wise, the Radeon HD 7870 should in theory be just a bit better 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 should be a lot (about 52%) faster with regards to texture 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

The Radeon HD 7870 will be a lot (more or less 22%) faster with regards to AA than the GeForce GTX 560 Ti, and also should be able to handle higher screen resolutions more effectively. (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

GeForce GTX 560 Ti

Radeon HD 7870

Specifications

Display 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 largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

GeForce GTX 560 Ti

Radeon HD 7870

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