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GeForce GTX 480 vs Radeon HD 6850


The GeForce GTX 480 features core clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 RAM. It features 480 SPUs along with 60 Texture Address Units and 48 Rasterization Operator Units.

Compare those specs to the Radeon HD 6850, which comes with GPU core speed of 775 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also features 960 Stream Processors, 48 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 480 250 Watts
Difference: 123 Watts (97%)

Memory Bandwidth

The GeForce GTX 480 should theoretically perform much faster than the Radeon HD 6850 overall. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 6850 128000 MB/sec
Difference: 49408 (39%)

Texel Rate

The GeForce GTX 480 should be a small bit (approximately 13%) better at texture filtering than the Radeon HD 6850. (explain)

GeForce GTX 480 42000 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 4800 (13%)

Pixel Rate

The GeForce GTX 480 should be a lot (more or less 35%) faster with regards to anti-aliasing than the Radeon HD 6850, and should be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 6850 24800 Mpixels/sec
Difference: 8800 (35%)

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

Display Prices

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GeForce GTX 480

Radeon HD 6850

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 480 Radeon HD 6850
Manufacturer nVidia AMD
Year March 2010 October 2010
Code Name GF100 Barts Pro
Memory 1536 MB 1024 MB
Core Speed 700 MHz 775 MHz
Memory Speed 3696 MHz 4000 MHz
Power (Max TDP) 250 watts 127 watts
Bandwidth 177408 MB/sec 128000 MB/sec
Texel Rate 42000 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 480 960
Texture Mapping Units 60 48
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 1700 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

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

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video 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 maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.


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