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Radeon HD 5850 vs Radeon HD 6870

Intro

The Radeon HD 5850 has a core clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 1440(288x5) SPUs, 72 TAUs, and 32 Raster Operation Units.

Compare all that to the Radeon HD 6870, which features a clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It features 1120 SPUs, 56 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon HD 6870, in theory, should perform a bit faster than the Radeon HD 5850 in general. (explain)

Radeon HD 6870 134400 MB/sec
Radeon HD 5850 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The Radeon HD 5850 will be a small bit (more or less 4%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)

Radeon HD 5850 52200 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 1800 (4%)

Pixel Rate

The Radeon HD 6870 is a lot (approximately 24%) better at FSAA than the Radeon HD 5850, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 6870 28800 Mpixels/sec
Radeon HD 5850 23200 Mpixels/sec
Difference: 5600 (24%)

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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Radeon HD 5850

Amazon.com

Check prices at:

Radeon HD 6870

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 Radeon HD 5850 Radeon HD 6870
Manufacturer AMD AMD
Year September 30, 2009 October 2010
Code Name Cypress PRO Barts XT
Memory 1024 MB 1024 MB
Core Speed 725 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 151 watts 151 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 52200 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 23200 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1440(288x5) 1120
Texture Mapping Units 72 56
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 1700 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated 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 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 the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 5850

Amazon.com

Check prices at:

Radeon HD 6870

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.

Comments

5 Responses to “Radeon HD 5850 vs Radeon HD 6870”
Advice on replacing my GPU. - Page 2 - HEXUS.community discussion forums says:

[...] reference cards, MSI are very quiet but not amazing for overclocks. The 6870 has just come out - http://www.hwcompare.com/6024/radeon...adeon-hd-6870/ - It's theoretically slightly faster and it is better at tesselation. However - the cheapest I can [...]

Anonymous says:

[...] la 6870 sin lugar a dudas como ves : comparacion 5850 vs 6870/ es un pocomejor y consume mucho menos __________________ cpu:amd thuban x6 [...]

5850 vs 6870x says:

[...] [...]

Vale la pena el cambio de hd 5850 a hd 6870 says:

[...] Re: Vale la pena el cambio de hd 5850 a hd 6870 en efecto, es una subida de un 8% osea no es favorable Radeon HD 5850 vs Radeon HD 6870 – Performance Comparison Benchmarks @ Hardware Compare [...]

sadsa says:

tu novia puta con mi pingo se ahoga y vos no desis nada por que sos un toga

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