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Geforce GTX 670 vs Radeon HD 6970


Intro

The Geforce GTX 670 uses a 28 nm design. nVidia has clocked the core speed at 915 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this particular model. It features 1344 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6970, which has GPU core speed of 880 MHz, and 2048 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 670 7424 points
Radeon HD 6970 3470 points
Difference: 3954 (114%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
Radeon HD 6970 250 Watts
Difference: 80 Watts (47%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should perform a bit faster than the Radeon HD 6970 overall. (explain)

Geforce GTX 670 192000 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 16000 (9%)

Texel Rate

The Geforce GTX 670 is much (about 21%) faster with regards to AF than the Radeon HD 6970. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 18000 (21%)

Pixel Rate

The Geforce GTX 670 should be a bit (approximately 4%) better at FSAA than the Radeon HD 6970, and also will be able to handle higher screen resolutions more effectively. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 6970 28160 Mpixels/sec
Difference: 1120 (4%)

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

Radeon HD 6970

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 670 Radeon HD 6970
Manufacturer nVidia AMD
Year May 2012 December 2010
Code Name GK104 Cayman XT
Memory 2048 MB 2048 MB
Core Speed 915 MHz 880 MHz
Memory Speed 6000 MHz 5500 MHz
Power (Max TDP) 170 watts 250 watts
Bandwidth 192000 MB/sec 176000 MB/sec
Texel Rate 102480 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 1344 1536
Texture Mapping Units 112 96
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 3540 million 2640 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 are applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Geforce GTX 670

Amazon.com

Radeon HD 6970

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.

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