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Radeon HD 6950 vs Radeon HD 7850


Intro

The Radeon HD 6950 uses a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this specific model. It features 1408 SPUs along with 88 Texture Address Units and 32 ROPs.

Compare that to the Radeon HD 7850, which comes with clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs as well as 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

As far as performance goes, the Radeon HD 6950 should theoretically be just a bit better than the Radeon HD 7850 overall. (explain)

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

Texel Rate

The Radeon HD 6950 is quite a bit (approximately 28%) more effective at texture filtering than the Radeon HD 7850. (explain)

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

Pixel Rate

The Radeon HD 7850 should be a bit (approximately 8%) more effective at FSAA than the Radeon HD 6950, and able to handle higher resolutions while still performing well. (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

Radeon HD 7850

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

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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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling 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 the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of 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.

Display Prices

Hide Prices

Radeon HD 6950

Amazon.com

Radeon HD 7850

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.

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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