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Radeon HD 6970 vs Radeon R9 270X

Intro

The Radeon HD 6970 features 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 TAUs and 32 ROPs.

Compare all of that to the Radeon R9 270X, which features core clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 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 R9 270X 6590 points
Radeon HD 6970 3470 points
Difference: 3120 (90%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
Radeon HD 6970 250 Watts
Difference: 70 Watts (39%)

Memory Bandwidth

The Radeon R9 270X should in theory perform just a bit faster than the Radeon HD 6970 in general. (explain)

Radeon R9 270X 179200 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 3200 (2%)

Texel Rate

The Radeon HD 6970 is a little bit (approximately 6%) better at AF than the Radeon R9 270X. (explain)

Radeon HD 6970 84480 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 4480 (6%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 270X is a better choice, but it probably won't make a huge difference. (explain)

Radeon R9 270X 32000 Mpixels/sec
Radeon HD 6970 28160 Mpixels/sec
Difference: 3840 (14%)

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 270X

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 270X
Manufacturer AMD AMD
Year December 2010 October 2013
Code Name Cayman XT Curacao XT
Memory 2048 MB 2048 MB
Core Speed 880 MHz 1000 MHz
Memory Speed 5500 MHz 5600 MHz
Power (Max TDP) 250 watts 180 watts
Bandwidth 176000 MB/sec 179200 MB/sec
Texel Rate 84480 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 28160 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 1536 1280
Texture Mapping Units 96 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 2800 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 6970

Amazon.com

Check prices at:

Radeon R9 270X

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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