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GeForce GTX 560 vs Radeon HD 6770

Intro

The GeForce GTX 560 features a GPU core clock speed of 810 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1001 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 6770, which comes with GPU core speed of 900 MHz, and 512 MB of GDDR5 RAM running at 1050 MHz through a 128-bit bus. It also is made up of 800 SPUs, 40 Texture Address Units, and 16 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 560 3030 points
Radeon HD 6770 1520 points
Difference: 1510 (99%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 108 Watts
GeForce GTX 560 150 Watts
Difference: 42 Watts (39%)

Memory Bandwidth

The GeForce GTX 560 should in theory be a lot faster than the Radeon HD 6770 in general. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 60928 (91%)

Texel Rate

The GeForce GTX 560 is a lot (about 26%) more effective at texture filtering than the Radeon HD 6770. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 6770 36000 Mtexels/sec
Difference: 9360 (26%)

Pixel Rate

The GeForce GTX 560 will be a lot (approximately 80%) better at AA than the Radeon HD 6770, and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 6770 14400 Mpixels/sec
Difference: 11520 (80%)

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 560

Amazon.com

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Radeon HD 6770

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 560 Radeon HD 6770
Manufacturer nVidia AMD
Year May 2011 January 2011
Code Name GF114 Juniper XT
Memory 1024 MB 512 MB
Core Speed 810 MHz 900 MHz
Memory Speed 4004 MHz 4200 MHz
Power (Max TDP) 150 watts 108 watts
Bandwidth 128128 MB/sec 67200 MB/sec
Texel Rate 45360 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 336 800
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 1040 million
Bus PCIe 2.0 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 6770

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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