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Radeon HD 5850 vs Radeon HD 6670 (OEM)


The Radeon HD 5850 features a core clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It features 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6670 (OEM), which has clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 memory. It features 480 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon HD 5850 151 Watts
Difference: 88 Watts (140%)

Memory Bandwidth

The Radeon HD 5850 should theoretically be much faster than the Radeon HD 6670 (OEM) in general. (explain)

Radeon HD 5850 128000 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 64000 (100%)

Texel Rate

The Radeon HD 5850 should be quite a bit (about 172%) faster with regards to texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 5850 52200 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 33000 (172%)

Pixel Rate

The Radeon HD 5850 should be a lot (approximately 263%) faster with regards to FSAA than the Radeon HD 6670 (OEM), and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 5850 23200 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 16800 (263%)

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

Radeon HD 6670 (OEM)

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.


Display Specifications

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Model Radeon HD 5850 Radeon HD 6670 (OEM)
Manufacturer AMD AMD
Year September 30, 2009 February 2011
Code Name Cypress PRO Turks
Memory 1024 MB 512 MB
Core Speed 725 MHz 800 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 151 watts 63 watts
Bandwidth 128000 MB/sec 64000 MB/sec
Texel Rate 52200 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 23200 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 1440(288x5) 480
Texture Mapping Units 72 24
Render Output Units 32 8
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 715 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the 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 most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.


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