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GeForce GTX 560 Ti 448 vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 560 Ti 448 comes with a clock speed of 732 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 320-bit memory bus, and makes use of a 40 nm design. It features 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Compare those specs to the Radeon HD 3870 X2 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 825 MHz. The GDDR4 RAM is set to run at a frequency of 1126 MHz on this particular card. It features 320(64x5) SPUs along with 16 Texture Address Units 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 theoretically be a small bit superior to the GeForce GTX 560 Ti 448 overall. (explain)

Radeon HD 3870 X2 1GB 144128 MB/sec
GeForce GTX 560 Ti 448 144000 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTX 560 Ti 448 will be quite a bit (about 55%) better at AF than the Radeon HD 3870 X2 1GB. (explain)

GeForce GTX 560 Ti 448 40992 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 14592 (55%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti 448 is the winner, though not by far. (explain)

GeForce GTX 560 Ti 448 29280 Mpixels/sec
Radeon HD 3870 X2 1GB 26400 Mpixels/sec
Difference: 2880 (11%)

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 448

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 448 Radeon HD 3870 X2 1GB
Manufacturer nVidia AMD
Year December 2011 Jan 28, 2008
Code Name GF110 R680
Memory 1280 MB 1024 MB (x2)
Core Speed 732 MHz 825 MHz (x2)
Memory Speed 3600 MHz 2252 MHz (x2)
Power (Max TDP) 210 watts (Unknown) watts
Bandwidth 144000 MB/sec 144128 MB/sec
Texel Rate 40992 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 448 320(64x5) (x2)
Texture Mapping Units 56 16 (x2)
Render Output Units 40 16 (x2)
Bus Type GDDR5 GDDR4
Bus Width 320-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 3000 million (Unknown) million
Bus PCIe 2.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported 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. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 are processed in one second. This figure is calculated 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 that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 560 Ti 448

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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