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Radeon HD 6970 vs Radeon R7 250X

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 Rasterization Operator Units.

Compare those specifications to the Radeon R7 250X, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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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 HD 6970 3470 points
Radeon R7 250X 2860 points
Difference: 610 (21%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 95 Watts
Radeon HD 6970 250 Watts
Difference: 155 Watts (163%)

Memory Bandwidth

In theory, the Radeon HD 6970 should be a lot faster than the Radeon R7 250X overall. (explain)

Radeon HD 6970 176000 MB/sec
Radeon R7 250X 72000 MB/sec
Difference: 104000 (144%)

Texel Rate

The Radeon HD 6970 will be much (more or less 111%) faster with regards to AF than the Radeon R7 250X. (explain)

Radeon HD 6970 84480 Mtexels/sec
Radeon R7 250X 40000 Mtexels/sec
Difference: 44480 (111%)

Pixel Rate

The Radeon HD 6970 will be quite a bit (approximately 76%) better at full screen anti-aliasing than the Radeon R7 250X, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon R7 250X 16000 Mpixels/sec
Difference: 12160 (76%)

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 R7 250X

Amazon.com

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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 R7 250X
Manufacturer AMD AMD
Year December 2010 February 2014
Code Name Cayman XT Cape Verde XT
Memory 2048 MB 1024 MB
Core Speed 880 MHz 1000 MHz
Memory Speed 5500 MHz 4500 MHz
Power (Max TDP) 250 watts 95 watts
Bandwidth 176000 MB/sec 72000 MB/sec
Texel Rate 84480 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 28160 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1536 640
Texture Mapping Units 96 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 1500 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 maximum amount of data (measured in MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are 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 higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 6970

Amazon.com

Check prices at:

Radeon R7 250X

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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