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Geforce GTX 670 vs Radeon HD 5870

Intro

The Geforce GTX 670 has a clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is made up of 1344 SPUs, 112 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon HD 5870, which uses a 40 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this particular model. It features 1600(320x5) SPUs as well as 80 TAUs 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 be a lot faster than the Radeon HD 5870 overall. (explain)

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

Texel Rate

The Geforce GTX 670 will be much (approximately 51%) better at texture filtering than the Radeon HD 5870. (explain)

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

Pixel Rate

The Geforce GTX 670 should be a bit (more or less 8%) better at AA than the Radeon HD 5870, and able to handle higher resolutions without slowing down too much. (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

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.

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: Bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. 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 many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to 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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