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GeForce GTX 460 (OEM) vs Radeon HD 6850

Intro

The GeForce GTX 460 (OEM) makes use of a 40 nm design. nVidia has set the core speed at 650 MHz. The GDDR5 RAM runs at a frequency of 850 MHz on this card. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

Compare that to the Radeon HD 6850, which features core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs along with 48 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 460 (OEM) 150 Watts
Difference: 23 Watts (18%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6850 is 18% quicker than the GeForce GTX 460 (OEM) in general, due to its greater bandwidth. (explain)

Radeon HD 6850 128000 MB/sec
GeForce GTX 460 (OEM) 108800 MB/sec
Difference: 19200 (18%)

Texel Rate

The Radeon HD 6850 will be a small bit (more or less 2%) better at AF than the GeForce GTX 460 (OEM). (explain)

Radeon HD 6850 37200 Mtexels/sec
GeForce GTX 460 (OEM) 36400 Mtexels/sec
Difference: 800 (2%)

Pixel Rate

The Radeon HD 6850 should be a small bit (approximately 19%) better at FSAA than the GeForce GTX 460 (OEM), and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce GTX 460 (OEM) 20800 Mpixels/sec
Difference: 4000 (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 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 6850

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.

Specifications

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Model GeForce GTX 460 (OEM) Radeon HD 6850
Manufacturer nVidia AMD
Year October 2010 October 2010
Code Name GF104 Barts Pro
Memory 1024 MB 1024 MB
Core Speed 650 MHz 775 MHz
Memory Speed 3400 MHz 4000 MHz
Power (Max TDP) 150 watts 127 watts
Bandwidth 108800 MB/sec 128000 MB/sec
Texel Rate 36400 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 336 960
Texture Mapping Units 56 48
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 1700 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 largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 6850

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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