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GeForce GTX Titan Black vs Radeon HD 3870 X2 512MB

Intro

The GeForce GTX Titan Black has a GPU core clock speed of 889 MHz, and the 6144 MB of GDDR5 RAM is set to run at 1750 MHz through a 384-bit bus. It also is made up of 2880 SPUs, 240 Texture Address Units, and 48 ROPs.

Compare those specs to the Radeon HD 3870 X2 512MB, which features a clock speed of 825 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 16 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX Titan Black should theoretically perform a lot faster than the Radeon HD 3870 X2 512MB overall. (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 is a lot (approximately 708%) more effective at AF 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

The GeForce GTX Titan Black is a lot (more or less 62%) faster with regards to anti-aliasing than the Radeon HD 3870 X2 512MB, and also capable of handling higher screen resolutions without slowing down too much. (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: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum 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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