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Radeon HD 6670 (OEM) 1GB vs Radeon HD 6970

Intro

The Radeon HD 6670 (OEM) 1GB has a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 TAUs, and 8 ROPs.

Compare those specifications to the Radeon HD 6970, which comes with core clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB 63 Watts
Radeon HD 6970 250 Watts
Difference: 187 Watts (297%)

Memory Bandwidth

The Radeon HD 6970 should in theory perform a lot faster than the Radeon HD 6670 (OEM) 1GB in general. (explain)

Radeon HD 6970 176000 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 112000 (175%)

Texel Rate

The Radeon HD 6970 is much (about 340%) faster with regards to AF than the Radeon HD 6670 (OEM) 1GB. (explain)

Radeon HD 6970 84480 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 65280 (340%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6970 is a better choice, by a large margin. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 21760 (340%)

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) 1GB

Amazon.com

Check prices at:

Radeon HD 6970

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 6670 (OEM) 1GB Radeon HD 6970
Manufacturer AMD AMD
Year February 2011 December 2010
Code Name Turks Cayman XT
Memory 1024 MB 2048 MB
Core Speed 800 MHz 880 MHz
Memory Speed 4000 MHz 5500 MHz
Power (Max TDP) 63 watts 250 watts
Bandwidth 64000 MB/sec 176000 MB/sec
Texel Rate 19200 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 480 1536
Texture Mapping Units 24 96
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 715 million 2640 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher 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 could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6670 (OEM) 1GB

Amazon.com

Check prices at:

Radeon HD 6970

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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