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GeForce GTX Titan vs Radeon HD 5870

Intro

The GeForce GTX Titan features a GPU core speed of 837 MHz, and the 6144 MB of GDDR5 RAM runs at 1502 MHz through a 384-bit bus. It also is comprised of 2688 Stream Processors, 224 Texture Address Units, and 48 ROPs.

Compare all that to the Radeon HD 5870, which has a GPU core clock speed of 850 MHz, and 1024 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is made up of 1600(320x5) Stream Processors, 80 Texture Address Units, and 32 ROPs.

(No game benchmarks for this combination yet.)

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

Performance-wise, the GeForce GTX Titan should theoretically be quite a bit superior to 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 should be much (approximately 176%) faster with regards to AF than the Radeon HD 5870. (explain)

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

Pixel Rate

The GeForce GTX Titan is much (approximately 48%) more effective at full screen anti-aliasing than the Radeon HD 5870, and able to handle higher screen resolutions more effectively. (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

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

Model GeForce GTX Titan Radeon HD 5870
Manufacturer nVidia AMD
Year February 2013 September 23, 2009
Code Name GK110 Cypress XT
Fab Process 28 nm 40 nm
Bus PCIe 3.0 x16 PCIe 2.1 x16
Memory 6144 MB 1024 MB
Core Speed 837 MHz 850 MHz
Shader Speed 837 MHz (N/A) MHz
Memory Speed 1502 MHz (6008 MHz effective) 1200 MHz (4800 MHz effective)
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
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2
Power (Max TDP) 250 watts 188 watts
Shader Model 5.0 5.0
Bandwidth 288384 MB/sec 153600 MB/sec
Texel Rate 187488 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 27200 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

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