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Radeon HD 6670 (OEM) vs Radeon R9 M270X

Intro

The Radeon HD 6670 (OEM) comes with a GPU core speed of 800 MHz, and the 512 MB of GDDR5 memory is set to run at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 24 Texture Address Units, and 8 ROPs.

Compare all that to the Radeon R9 M270X, which has GPU core speed of 725 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M270X should in theory be a bit superior to the Radeon HD 6670 (OEM) overall. (explain)

Radeon R9 M270X 72000 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R9 M270X will be much (approximately 51%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

Radeon R9 M270X 29000 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 9800 (51%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M270X is a better choice, by far. (explain)

Radeon R9 M270X 11600 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 5200 (81%)

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

Check prices at:

Radeon R9 M270X

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 M270X
Manufacturer AMD AMD
Year February 2011 May 1 2014
Code Name Turks Venus XT
Memory 512 MB 2048 MB
Core Speed 800 MHz 725 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 63 watts (Unknown) watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 19200 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 6400 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 480 640
Texture Mapping Units 24 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 715 million (Unknown) million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6670 (OEM)

Amazon.com

Check prices at:

Radeon R9 M270X

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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