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GeForce GTX Titan Black vs Radeon HD 3870 X2 512MB

Intro

The GeForce GTX Titan Black features clock speeds of 889 MHz on the GPU, and 1750 MHz on the 6144 MB of GDDR5 RAM. It features 2880 SPUs as well as 240 TAUs and 48 ROPs.

Compare all that to the Radeon HD 3870 X2 512MB, which comes with a core clock speed of 825 MHz and a GDDR3 memory speed of 900 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan Black is 192% faster than the Radeon HD 3870 X2 512MB in general, because of its greater bandwidth. (explain)

GeForce GTX Titan Black 336000 MB/sec
Radeon HD 3870 X2 512MB 115200 MB/sec
Difference: 220800 (192%)

Texel Rate

The GeForce GTX Titan Black should be much (more or less 708%) faster with regards to anisotropic filtering than the Radeon HD 3870 X2 512MB. (explain)

GeForce GTX Titan Black 213360 Mtexels/sec
Radeon HD 3870 X2 512MB 26400 Mtexels/sec
Difference: 186960 (708%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan Black is superior to the Radeon HD 3870 X2 512MB, by a large margin. (explain)

GeForce GTX Titan Black 42672 Mpixels/sec
Radeon HD 3870 X2 512MB 26400 Mpixels/sec
Difference: 16272 (62%)

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 Titan Black

Amazon.com

Check prices at:

Radeon HD 3870 X2 512MB

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 Titan Black Radeon HD 3870 X2 512MB
Manufacturer nVidia AMD
Year February 2014 Jan 28, 2008
Code Name GK110-430 R680
Memory 6144 MB 512 MB (x2)
Core Speed 889 MHz 825 MHz (x2)
Memory Speed 7000 MHz 1800 MHz (x2)
Power (Max TDP) 250 watts (Unknown) watts
Bandwidth 336000 MB/sec 115200 MB/sec
Texel Rate 213360 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 42672 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 2880 320(64x5) (x2)
Texture Mapping Units 240 16 (x2)
Render Output Units 48 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 384-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 7080 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.4 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs 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 fill 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 get to the max fill rate.

Display Prices

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GeForce GTX Titan Black

Amazon.com

Check prices at:

Radeon HD 3870 X2 512MB

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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