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Geforce GTX 670 vs Radeon HD 6950

Intro

The Geforce GTX 670 features a clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 TAUs, and 32 ROPs.

Compare all that to the Radeon HD 6950, which uses a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.

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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 7351 points
Radeon HD 6950 3240 points
Difference: 4111 (127%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
Radeon HD 6950 200 Watts
Difference: 30 Watts (18%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should be 20% quicker than the Radeon HD 6950 in general, due to its greater data rate. (explain)

Geforce GTX 670 192000 MB/sec
Radeon HD 6950 160000 MB/sec
Difference: 32000 (20%)

Texel Rate

The Geforce GTX 670 is much (more or less 46%) faster with regards to anisotropic filtering than the Radeon HD 6950. (explain)

Geforce GTX 670 102480 Mtexels/sec
Radeon HD 6950 70400 Mtexels/sec
Difference: 32080 (46%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 670 is a better choice, but only just. (explain)

Geforce GTX 670 29280 Mpixels/sec
Radeon HD 6950 25600 Mpixels/sec
Difference: 3680 (14%)

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 6950

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 6950
Manufacturer nVidia AMD
Year May 2012 December 2010
Code Name GK104 Cayman Pro
Memory 2048 MB 1024 MB
Core Speed 915 MHz 800 MHz
Memory Speed 6000 MHz 5000 MHz
Power (Max TDP) 170 watts 200 watts
Bandwidth 192000 MB/sec 160000 MB/sec
Texel Rate 102480 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1344 1408
Texture Mapping Units 112 88
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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Geforce GTX 670

Amazon.com

Check prices at:

Radeon HD 6950

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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