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GeForce GTX 460 1GB vs Radeon HD 6850

Intro

The GeForce GTX 460 1GB makes use of a 40 nm design. nVidia has clocked the core speed at 675 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this specific card. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Compare that to the Radeon HD 6850, which comes with core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs as well as 48 TAUs and 32 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 33 Watts (26%)

Memory Bandwidth

In theory, the Radeon HD 6850 is 11% faster than the GeForce GTX 460 1GB in general, because of its higher bandwidth. (explain)

Radeon HD 6850 128000 MB/sec
GeForce GTX 460 1GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 460 1GB will be a small bit (more or less 2%) better at texture filtering than the Radeon HD 6850. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 600 (2%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6850 is a better choice, though only just barely. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce GTX 460 1GB 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

GeForce GTX 460 1GB

Amazon.com

Radeon HD 6850

Amazon.com

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

Model GeForce GTX 460 1GB Radeon HD 6850
Manufacturer nVidia AMD
Year July 2010 October 2010
Code Name GF104 Barts Pro
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe x16
Memory 1024 MB 1024 MB
Core Speed 675 MHz 775 MHz
Shader Speed 1350 MHz (N/A) MHz
Memory Speed 900 MHz (3600 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 336 960
Texture Mapping Units 56 48
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 160 watts 127 watts
Shader Model 5.0 5.0
Bandwidth 115200 MB/sec 128000 MB/sec
Texel Rate 37800 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 24800 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 are applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Comments

5 Responses to “GeForce GTX 460 1GB vs Radeon HD 6850”
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[...] Graphics Cards related queries here. Look at the comparisions here. GTX 460 and HD 6850: GeForce GTX 460 1GB vs Radeon HD 6850 – Performance Comparison Benchmarks @ Hardware Compare Winner -- HD 6850 GTX 550Ti and HD 6770 GeForce GTX 550 Ti vs Radeon HD 6770 – Performance [...]
bowss says:
HD 6850 CLEAR WINNER THIS CARD WILL LAST YOU 3-4 YEARS VERY GOOD PERFORMANCE TRUST ME !
[...] crossfired xD) If you're dead set on one of those two cards, the 6850 is the way to go (see here:GeForce GTX 460 1GB vs Radeon HD 6850 – Performance Comparison Benchmarks @ Hardware Compare) That CPU is pretty decent, it's 5th down from the top (See here: Gaming CPU Hierarchy Chart : [...]

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