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GeForce GTX Titan vs Radeon HD 5870

Intro

The GeForce GTX Titan has a core clock speed of 837 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It features 2688 SPUs, 224 TAUs, and 48 ROPs.

Compare those specs to the Radeon HD 5870, which has clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 1600(320x5) SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
GeForce GTX Titan 250 Watts
Difference: 62 Watts (33%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan should be much faster than the Radeon HD 5870 in general. (explain)

GeForce GTX Titan 288384 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 134784 (88%)

Texel Rate

The GeForce GTX Titan is much (about 176%) faster with regards to texture filtering than the Radeon HD 5870. (explain)

GeForce GTX Titan 187488 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 119488 (176%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX Titan is superior to the Radeon HD 5870, by far. (explain)

GeForce GTX Titan 40176 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 12976 (48%)

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

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GeForce GTX Titan

Amazon.com

Radeon HD 5870

Amazon.com

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 Radeon HD 5870
Manufacturer nVidia AMD
Year February 2013 September 23, 2009
Code Name GK110 Cypress XT
Memory 6144 MB 1024 MB
Core Speed 837 MHz 850 MHz
Memory Speed 6008 MHz 4800 MHz
Power (Max TDP) 250 watts 188 watts
Bandwidth 288384 MB/sec 153600 MB/sec
Texel Rate 187488 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 2688 1600(320x5)
Texture Mapping Units 224 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 7080 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's 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 memory bandwidth is, the lower the ability to get to the max fill rate.

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