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GeForce GTX 460 2GB vs Radeon HD 6850

Intro

The GeForce GTX 460 2GB comes with a GPU clock speed of 675 MHz, and the 2048 MB of GDDR5 memory is set to run at 900 MHz through a 256-bit bus. It also is comprised of 336 Stream Processors, 56 TAUs, and 32 ROPs.

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 460 2GB 160 Watts
Difference: 33 Watts (26%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6850 will be 11% faster than the GeForce GTX 460 2GB overall, due to its greater data rate. (explain)

Radeon HD 6850 128000 MB/sec
GeForce GTX 460 2GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 460 2GB is a little bit (more or less 2%) more effective at anisotropic filtering than the Radeon HD 6850. (explain)

GeForce GTX 460 2GB 37800 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 600 (2%)

Pixel Rate

The Radeon HD 6850 is a small bit (about 15%) better at FSAA than the GeForce GTX 460 2GB, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce GTX 460 2GB 21600 Mpixels/sec
Difference: 3200 (15%)

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 2GB

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 2GB Radeon HD 6850
Manufacturer nVidia AMD
Year July 2010 October 2010
Code Name GF104 Barts Pro
Memory 2048 MB 1024 MB
Core Speed 675 MHz 775 MHz
Memory Speed 3600 MHz 4000 MHz
Power (Max TDP) 160 watts 127 watts
Bandwidth 115200 MB/sec 128000 MB/sec
Texel Rate 37800 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 21600 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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 2GB

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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