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Radeon HD 6670 (OEM) vs Radeon R9 285

Intro

The Radeon HD 6670 (OEM) makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this model. It features 480 SPUs as well as 24 TAUs and 8 ROPs.

Compare all of that to the Radeon R9 285, which uses a 28 nm design. AMD has set the core speed at 918 MHz. The GDDR5 memory runs at a frequency of 1375 MHz on this card. It features 1792 SPUs as well as 112 TAUs 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 R9 285 8500 points
Radeon HD 6670 (OEM) 1120 points
Difference: 7380 (659%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon R9 285 190 Watts
Difference: 127 Watts (202%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 should be a lot faster than the Radeon HD 6670 (OEM) overall. (explain)

Radeon R9 285 176000 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 112000 (175%)

Texel Rate

The Radeon R9 285 should be a lot (about 436%) faster with regards to texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon R9 285 102816 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 83616 (436%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 285 is a better choice, and very much so. (explain)

Radeon R9 285 29376 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 22976 (359%)

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 R9 285

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) Radeon R9 285
Manufacturer AMD AMD
Year February 2011 September 2014
Code Name Turks Tonga PRO
Memory 512 MB 2048 MB
Core Speed 800 MHz 918 MHz
Memory Speed 4000 MHz 5500 MHz
Power (Max TDP) 63 watts 190 watts
Bandwidth 64000 MB/sec 176000 MB/sec
Texel Rate 19200 Mtexels/sec 102816 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 29376 Mpixels/sec
Unified Shaders 480 1792
Texture Mapping Units 24 112
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 715 million 5000 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.4

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 6670 (OEM)

Amazon.com

Check prices at:

Radeon R9 285

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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