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Radeon HD 6970 vs Radeon R9 M390X

Intro

The Radeon HD 6970 comes with core clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 96 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon R9 M390X, which uses a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X 125 Watts
Radeon HD 6970 250 Watts
Difference: 125 Watts (100%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should theoretically be a bit better than the Radeon R9 M390X overall. (explain)

Radeon HD 6970 176000 MB/sec
Radeon R9 M390X 160000 MB/sec
Difference: 16000 (10%)

Texel Rate

The Radeon R9 M390X should be a bit (more or less 10%) more effective at texture filtering than the Radeon HD 6970. (explain)

Radeon R9 M390X 92544 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 8064 (10%)

Pixel Rate

The Radeon HD 6970 will be a lot (about 22%) faster with regards to AA than the Radeon R9 M390X, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon R9 M390X 23136 Mpixels/sec
Difference: 5024 (22%)

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 6970

Amazon.com

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Radeon R9 M390X

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 6970 Radeon R9 M390X
Manufacturer AMD AMD
Year December 2010 2015
Code Name Cayman XT Tonga
Memory 2048 MB 4096 MB
Core Speed 880 MHz 723 MHz
Memory Speed 5500 MHz 5000 MHz
Power (Max TDP) 250 watts 125 watts
Bandwidth 176000 MB/sec 160000 MB/sec
Texel Rate 84480 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 28160 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 96 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 6970

Amazon.com

Check prices at:

Radeon R9 M390X

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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