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GeForce GTX 470 vs Radeon HD 6770 1GB


The GeForce GTX 470 makes use of a 40 nm design. nVidia has set the core frequency at 607 MHz. The GDDR5 RAM runs at a frequency of 837 MHz on this specific model. It features 448 SPUs as well as 56 Texture Address Units and 40 Rasterization Operator Units.

Compare all that to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory is set to run at a speed of 1050 MHz on this specific model. It features 800 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB 108 Watts
GeForce GTX 470 215 Watts
Difference: 107 Watts (99%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 should be 99% quicker than the Radeon HD 6770 1GB in general, due to its higher data rate. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 66720 (99%)

Texel Rate

The Radeon HD 6770 1GB is a bit (about 6%) faster with regards to AF than the GeForce GTX 470. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 2008 (6%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 470 is superior to the Radeon HD 6770 1GB, and very much so. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 6770 1GB 14400 Mpixels/sec
Difference: 9880 (69%)

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 470

Radeon HD 6770 1GB

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.


Display Specifications

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Model GeForce GTX 470 Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year March 2010 January 2011
Code Name GF100 Juniper XT
Memory 1280 MB 1024 MB
Core Speed 607 MHz 900 MHz
Memory Speed 3348 MHz 4200 MHz
Power (Max TDP) 215 watts 108 watts
Bandwidth 133920 MB/sec 67200 MB/sec
Texel Rate 33992 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 448 800
Texture Mapping Units 56 40
Render Output Units 40 16
Bus Type GDDR5 GDDR5
Bus Width 320-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 1040 million
Bus PCIe 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 information (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.


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