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Radeon HD 5870 vs Radeon HD 6970

Intro

The Radeon HD 5870 makes use of a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory is set to run at a frequency of 1200 MHz on this particular card. It features 1600(320x5) SPUs as well as 80 Texture Address Units and 32 ROPs.

Compare all of that to the Radeon HD 6970, which has a GPU core clock speed of 880 MHz, and 2048 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
Radeon HD 6970 250 Watts
Difference: 62 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should in theory be just a bit superior to the Radeon HD 5870 overall. (explain)

Radeon HD 6970 176000 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 22400 (15%)

Texel Rate

The Radeon HD 6970 is a lot (more or less 24%) faster with regards to AF than the Radeon HD 5870. (explain)

Radeon HD 6970 84480 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 16480 (24%)

Pixel Rate

The Radeon HD 6970 is a little bit (about 4%) better at FSAA than the Radeon HD 5870, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 960 (4%)

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 5870

Amazon.com

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Radeon HD 6970

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 5870 Radeon HD 6970
Manufacturer AMD AMD
Year September 23, 2009 December 2010
Code Name Cypress XT Cayman XT
Memory 1024 MB 2048 MB
Core Speed 850 MHz 880 MHz
Memory Speed 4800 MHz 5500 MHz
Power (Max TDP) 188 watts 250 watts
Bandwidth 153600 MB/sec 176000 MB/sec
Texel Rate 68000 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 1600(320x5) 1536
Texture Mapping Units 80 96
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 2640 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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR 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 texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 5870

Amazon.com

Check prices at:

Radeon HD 6970

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

One Response to “Radeon HD 5870 vs Radeon HD 6970”
PCHelper.nl || Advies nodig voor sapphire 5870 1 gb, GDDR5 (game edition) says:

[...] presteert die kaart beter en kan die wel op mijn systeem en die vorige niet. Ter vergelijking: http://www.hwcompare.com/6353/radeon...adeon-hd-6970/ Dan zou je toch zeggen dat die hd 6970 ook teveel wordt? Of snap ik het verkeerd [...]

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