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GeForce GTX 970 vs Radeon HD 6770

Intro

The GeForce GTX 970 comes with a GPU core speed of 1050 MHz, and the 4096 MB of GDDR5 memory is set to run at 1750 MHz through a 256-bit bus. It also is comprised of 1664 Stream Processors, 104 TAUs, and 64 ROPs.

Compare all that to the Radeon HD 6770, which has GPU core speed of 900 MHz, and 512 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is made up of 800 Stream Processors, 40 Texture Address Units, and 16 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 970 10867 points
Radeon HD 6770 1520 points
Difference: 9347 (615%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 108 Watts
GeForce GTX 970 145 Watts
Difference: 37 Watts (34%)

Memory Bandwidth

In theory, the GeForce GTX 970 is 233% quicker than the Radeon HD 6770 in general, due to its greater bandwidth. (explain)

GeForce GTX 970 224000 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 156800 (233%)

Texel Rate

The GeForce GTX 970 will be a lot (more or less 203%) more effective at anisotropic filtering than the Radeon HD 6770. (explain)

GeForce GTX 970 109200 Mtexels/sec
Radeon HD 6770 36000 Mtexels/sec
Difference: 73200 (203%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 970 is superior to the Radeon HD 6770, by far. (explain)

GeForce GTX 970 67200 Mpixels/sec
Radeon HD 6770 14400 Mpixels/sec
Difference: 52800 (367%)

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 970

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 970 Radeon HD 6770
Manufacturer nVidia AMD
Year September 2014 January 2011
Code Name GM204-200 Juniper XT
Memory 4096 MB 512 MB
Core Speed 1050 MHz 900 MHz
Memory Speed 7000 MHz 4200 MHz
Power (Max TDP) 145 watts 108 watts
Bandwidth 224000 MB/sec 67200 MB/sec
Texel Rate 109200 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 1664 800
Texture Mapping Units 104 40
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 5200 million 1040 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 11.2 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably 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 970

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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