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Radeon HD 6670 (OEM) vs Radeon HD 6850

Intro

The Radeon HD 6670 (OEM) makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this specific card. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 6850, which comes with core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs as well as 48 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 6850 2395 points
Radeon HD 6670 (OEM) 1120 points
Difference: 1275 (114%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon HD 6850 127 Watts
Difference: 64 Watts (102%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6850 should be 100% quicker than the Radeon HD 6670 (OEM) overall, because of its greater bandwidth. (explain)

Radeon HD 6850 128000 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 64000 (100%)

Texel Rate

The Radeon HD 6850 should be quite a bit (approximately 94%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

Radeon HD 6850 37200 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 18000 (94%)

Pixel Rate

The Radeon HD 6850 is a lot (about 288%) better at AA than the Radeon HD 6670 (OEM), and also able to handle higher screen resolutions better. (explain)

Radeon HD 6850 24800 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 18400 (288%)

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 6670 (OEM)

Amazon.com

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Radeon HD 6850

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 6670 (OEM) Radeon HD 6850
Manufacturer AMD AMD
Year February 2011 October 2010
Code Name Turks Barts Pro
Memory 512 MB 1024 MB
Core Speed 800 MHz 775 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 63 watts 127 watts
Bandwidth 64000 MB/sec 128000 MB/sec
Texel Rate 19200 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 480 960
Texture Mapping Units 24 48
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 715 million 1700 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 6670 (OEM)

Amazon.com

Check prices at:

Radeon HD 6850

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

2 Responses to “Radeon HD 6670 (OEM) vs Radeon HD 6850”
Reticuli says:

Why on earth is HP using that crummy chip in their $2000 3d touchsmart? What a rip off.

Budget Gaming Rig for 25k-30k says:

[...] 6670. Now that your budget allows you to get a gpu, you have a good budget for it. Here you go: Radeon HD 6670 (OEM) vs Radeon HD 6850 – Performance Comparison Benchmarks @ Hardware Compare ---------------------------------------------- My RIG: ASUS M5A97 || CORSAIR VENGEANCE 4GB [...]

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