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Geforce GTX 770 vs Radeon HD 6970

Intro

The Geforce GTX 770 makes use of a 28 nm design. nVidia has clocked the core speed at 1046 MHz. The GDDR5 RAM runs at a frequency of 1753 MHz on this card. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Compare those specs to the Radeon HD 6970, which comes with a clock speed of 880 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It 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 770 7854 points
Radeon HD 6970 3470 points
Difference: 4384 (126%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770 230 Watts
Radeon HD 6970 250 Watts
Difference: 20 Watts (9%)

Memory Bandwidth

In theory, the Geforce GTX 770 should perform much faster than the Radeon HD 6970 in general. (explain)

Geforce GTX 770 224384 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 48384 (27%)

Texel Rate

The Geforce GTX 770 will be much (more or less 58%) more effective at texture filtering than the Radeon HD 6970. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 49408 (58%)

Pixel Rate

The Geforce GTX 770 will be a bit (about 19%) better at AA than the Radeon HD 6970, and should be able to handle higher screen resolutions better. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 6970 28160 Mpixels/sec
Difference: 5312 (19%)

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 770

Amazon.com

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Radeon HD 6970

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 770 Radeon HD 6970
Manufacturer nVidia AMD
Year May 2013 December 2010
Code Name GK104 Cayman XT
Memory 2048 MB 2048 MB
Core Speed 1046 MHz 880 MHz
Memory Speed 7012 MHz 5500 MHz
Power (Max TDP) 230 watts 250 watts
Bandwidth 224384 MB/sec 176000 MB/sec
Texel Rate 133888 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 1536 1536
Texture Mapping Units 128 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 4.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Geforce GTX 770

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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