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Radeon HD 5670 vs Radeon HD 7850

Intro

The Radeon HD 5670 uses a 40 nm design. AMD has clocked the core speed at 775 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this specific card. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Compare those specs to the Radeon HD 7850, which uses a 28 nm design. AMD has set the core speed at 860 MHz. The GDDR5 RAM runs at a speed of 1200 MHz on this particular model. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
Radeon HD 7850 130 Watts
Difference: 69 Watts (113%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7850 should theoretically be a lot superior to the Radeon HD 5670 overall. (explain)

Radeon HD 7850 153600 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 89600 (140%)

Texel Rate

The Radeon HD 7850 is quite a bit (more or less 255%) faster with regards to texture filtering than the Radeon HD 5670. (explain)

Radeon HD 7850 55040 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 39540 (255%)

Pixel Rate

The Radeon HD 7850 will be quite a bit (about 344%) better at FSAA than the Radeon HD 5670, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 21320 (344%)

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 5670

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 5670 Radeon HD 7850
Manufacturer AMD AMD
Year January 14, 2010 March 2012
Code Name Redwood XT Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 775 MHz 860 MHz
Memory Speed 4000 MHz 4800 MHz
Power (Max TDP) 61 watts 130 watts
Bandwidth 64000 MB/sec 153600 MB/sec
Texel Rate 15500 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 6200 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 400(80x5) 1024
Texture Mapping Units 20 64
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 627 million 2800 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core 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 quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 5670

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.

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