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Geforce GTX 670 vs Radeon HD 5870

Intro

The Geforce GTX 670 comes with clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Compare all of that to the Radeon HD 5870, which has a clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1600(320x5) SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
Radeon HD 5870 188 Watts
Difference: 18 Watts (11%)

Memory Bandwidth

The Geforce GTX 670, in theory, should perform much faster than the Radeon HD 5870 in general. (explain)

Geforce GTX 670 192000 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 38400 (25%)

Texel Rate

The Geforce GTX 670 should be much (about 51%) better at anisotropic filtering than the Radeon HD 5870. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 34480 (51%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 670 is the winner, but it probably won't make a huge difference. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 2080 (8%)

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 670

Amazon.com

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Radeon HD 5870

Amazon.com

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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 670 Radeon HD 5870
Manufacturer nVidia AMD
Year May 2012 September 23, 2009
Code Name GK104 Cypress XT
Memory 2048 MB 1024 MB
Core Speed 915 MHz 850 MHz
Memory Speed 6000 MHz 4800 MHz
Power (Max TDP) 170 watts 188 watts
Bandwidth 192000 MB/sec 153600 MB/sec
Texel Rate 102480 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1344 1600(320x5)
Texture Mapping Units 112 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 3540 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 3.2

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's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends 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 max fill rate.

Display Prices

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Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 5870

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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