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Radeon HD 6950 vs Radeon HD 7850

Intro

The Radeon HD 6950 has a GPU core speed of 800 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1250 MHz through a 256-bit bus. It also is made up of 1408 Stream Processors, 88 TAUs, and 32 ROPs.

Compare those specs to the Radeon HD 7850, which features a GPU core clock speed of 860 MHz, and 2048 MB of GDDR5 memory running at 1200 MHz through a 256-bit bus. It also is comprised of 1024 Stream Processors, 64 Texture Address Units, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7850 5200 points
Radeon HD 6950 3240 points
Difference: 1960 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon HD 6950 200 Watts
Difference: 70 Watts (54%)

Memory Bandwidth

The Radeon HD 6950, in theory, should be a little bit faster than the Radeon HD 7850 in general. (explain)

Radeon HD 6950 160000 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 6400 (4%)

Texel Rate

The Radeon HD 6950 will be much (approximately 28%) faster with regards to AF than the Radeon HD 7850. (explain)

Radeon HD 6950 70400 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 15360 (28%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7850 is a better choice, though only just barely. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon HD 6950 25600 Mpixels/sec
Difference: 1920 (8%)

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 6950

Amazon.com

Check prices at:

Radeon HD 7850

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 6950 Radeon HD 7850
Manufacturer AMD AMD
Year December 2010 March 2012
Code Name Cayman Pro Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 800 MHz 860 MHz
Memory Speed 5000 MHz 4800 MHz
Power (Max TDP) 200 watts 130 watts
Bandwidth 160000 MB/sec 153600 MB/sec
Texel Rate 70400 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 1408 1024
Texture Mapping Units 88 64
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 2800 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 6950

Amazon.com

Check prices at:

Radeon HD 7850

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

3 Responses to “Radeon HD 6950 vs Radeon HD 7850”
HD6950 - www.hardwarezone.com.sg says:

[...] im not gg to OC, so i will get the cheapest i found the comparison between HD6950 vs HD7850 here Radeon HD 6950 vs Radeon HD 7850 – Performance Comparison Benchmarks @ Hardware Compare seems like there are some pros and cons for each model, but the power consumption is kinda draw [...]

saad says:

nice graphics card amd hd 6950

alan verne says:

hd 6950 is better than 7850

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