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Radeon HD 5850 vs Radeon HD 6870

Intro

The Radeon HD 5850 has a GPU core clock speed of 725 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1000 MHz through a 256-bit bus. It also features 1440(288x5) Stream Processors, 72 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 6870, which features a core clock speed of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also makes use of a 256-bit memory bus, and makes use of 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 should in theory be a little bit faster than the Radeon HD 5850 overall. (explain)

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

Texel Rate

The Radeon HD 5850 should be a bit (about 4%) faster with regards to texture filtering than the Radeon HD 6870. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6870 is superior to the Radeon HD 5850, by far. (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

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Radeon HD 6870

Amazon.com

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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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential 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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