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Radeon HD 7970 vs Radeon R9 290X

Intro

The Radeon HD 7970 comes with a core clock speed of 925 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon R9 290X, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this card. It features 2816 SPUs along with 176 Texture Address Units and 64 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 290X 10609 points
Radeon HD 7970 8225 points
Difference: 2384 (29%)

Grand Theft Auto V | 1920x1080 | Very High

Radeon R9 290X 60 FPS
Radeon HD 7970 37 FPS
Difference: 23 (62%)

Ethereum Mining Hash Rate

Radeon R9 290X 29 Mh/s
Radeon HD 7970 21 Mh/s
Difference: 8 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7970 250 Watts
Radeon R9 290X 300 Watts
Difference: 50 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290X is 21% quicker than the Radeon HD 7970 overall, due to its greater data rate. (explain)

Radeon R9 290X 320000 MB/sec
Radeon HD 7970 264000 MB/sec
Difference: 56000 (21%)

Texel Rate

The Radeon R9 290X will be a small bit (about 19%) better at anisotropic filtering than the Radeon HD 7970. (explain)

Radeon R9 290X 140800 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 22400 (19%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 290X is the winner, by a large margin. (explain)

Radeon R9 290X 51200 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 21600 (73%)

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 7970

Amazon.com

Check prices at:

Radeon R9 290X

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 7970 Radeon R9 290X
Manufacturer AMD AMD
Year January 2012 October 2013
Code Name Tahiti XT Hawaii XT
Memory 3072 MB 4096 MB
Core Speed 925 MHz 800 MHz
Memory Speed 5500 MHz 5000 MHz
Power (Max TDP) 250 watts 300 watts
Bandwidth 264000 MB/sec 320000 MB/sec
Texel Rate 118400 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 51200 Mpixels/sec
Unified Shaders 2048 2816
Texture Mapping Units 128 176
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 384-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 4313 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 7970

Amazon.com

Check prices at:

Radeon R9 290X

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.

Comments

One Response to “Radeon HD 7970 vs Radeon R9 290X”
Nathan says:

The R9 290x Is actually MORE efficient.

Cool.

Both are good cards.

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