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GeForce GTX 560 Ti vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 560 Ti features a clock frequency of 822 MHz and a GDDR5 memory speed of 1002 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is comprised of 384 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 3870 X2 1GB, which comes with core speeds of 825 MHz on the GPU, and 1126 MHz on the 1024 MB of GDDR4 memory. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 3870 X2 1GB should in theory be just a bit superior to the GeForce GTX 560 Ti in general. (explain)

Radeon HD 3870 X2 1GB 144128 MB/sec
GeForce GTX 560 Ti 128256 MB/sec
Difference: 15872 (12%)

Texel Rate

The GeForce GTX 560 Ti should be quite a bit (more or less 99%) better at texture filtering than the Radeon HD 3870 X2 1GB. (explain)

GeForce GTX 560 Ti 52608 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 26208 (99%)

Pixel Rate

The Radeon HD 3870 X2 1GB is a bit (about 0%) faster with regards to full screen anti-aliasing than the GeForce GTX 560 Ti, and should be capable of handling higher screen resolutions better. (explain)

Radeon HD 3870 X2 1GB 26400 Mpixels/sec
GeForce GTX 560 Ti 26304 Mpixels/sec
Difference: 96 (0%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

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 Ti Radeon HD 3870 X2 1GB
Manufacturer nVidia AMD
Year January 2011 Jan 28, 2008
Code Name GF114 R680
Memory 1024 MB 1024 MB (x2)
Core Speed 822 MHz 825 MHz (x2)
Memory Speed 4008 MHz 2252 MHz (x2)
Power (Max TDP) 170 watts (Unknown) watts
Bandwidth 128256 MB/sec 144128 MB/sec
Texel Rate 52608 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 384 320(64x5) (x2)
Texture Mapping Units 64 16 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR4
Bus Width 256-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 1950 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, 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 most pixels that the graphics card can possibly record to its 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 sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

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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