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GeForce GTX 460 (OEM) vs Radeon HD 6850

Intro

The GeForce GTX 460 (OEM) uses a 40 nm design. nVidia has clocked the core speed at 650 MHz. The GDDR5 memory runs at a frequency of 850 MHz on this specific card. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon HD 6850, which makes use of a 40 nm design. AMD has set the core frequency at 775 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this specific model. It features 960 SPUs along with 48 TAUs 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 should perform just a bit faster than the GeForce GTX 460 (OEM) overall. (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%) faster with regards to anisotropic filtering 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 is a little bit (approximately 19%) better at full screen anti-aliasing than the GeForce GTX 460 (OEM), and also able to handle higher screen resolutions better. (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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 can be applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max 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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