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GeForce GTX 660 Ti vs Radeon HD 6970

Intro

The GeForce GTX 660 Ti features a core clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 192-bit bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 TAUs, and 24 ROPs.

Compare those specs to the Radeon HD 6970, which features clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 Texture Address Units 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 660 Ti 6013 points
Radeon HD 6970 3470 points
Difference: 2543 (73%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
Radeon HD 6970 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the Radeon HD 6970 should perform much faster than the GeForce GTX 660 Ti overall. (explain)

Radeon HD 6970 176000 MB/sec
GeForce GTX 660 Ti 144000 MB/sec
Difference: 32000 (22%)

Texel Rate

The GeForce GTX 660 Ti is much (more or less 21%) more effective at anisotropic filtering than the Radeon HD 6970. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 18000 (21%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6970 is a better choice, by a large margin. (explain)

Radeon HD 6970 28160 Mpixels/sec
GeForce GTX 660 Ti 21960 Mpixels/sec
Difference: 6200 (28%)

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 660 Ti

Amazon.com

Check prices at:

Radeon HD 6970

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 660 Ti Radeon HD 6970
Manufacturer nVidia AMD
Year August 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) 150 watts 250 watts
Bandwidth 144000 MB/sec 176000 MB/sec
Texel Rate 102480 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 21960 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 1344 1536
Texture Mapping Units 112 96
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-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 4.3 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few 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 660 Ti

Amazon.com

Check prices at:

Radeon HD 6970

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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