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GeForce GTX 980 vs Radeon HD 7950

Intro

The GeForce GTX 980 has a clock frequency of 1126 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

Compare all that to the Radeon HD 7950, which features GPU core speed of 800 MHz, and 1536 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is comprised of 1792 SPUs, 112 TAUs, and 32 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

GeForce GTX 980 13552 points
Radeon HD 7950 7731 points
Difference: 5821 (75%)

Ethereum Mining Hash Rate

Radeon HD 7950 21 Mh/s
GeForce GTX 980 20 Mh/s
Difference: 1 (5%)

Zcash Mining Hash Rate

GeForce GTX 980 408 Sol/s
Radeon HD 7950 235 Sol/s
Difference: 173 (74%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980 165 Watts
Radeon HD 7950 200 Watts
Difference: 35 Watts (21%)

Memory Bandwidth

The Radeon HD 7950 should theoretically perform just a bit faster than the GeForce GTX 980 overall. (explain)

Radeon HD 7950 240000 MB/sec
GeForce GTX 980 224000 MB/sec
Difference: 16000 (7%)

Texel Rate

The GeForce GTX 980 will be much (approximately 61%) better at AF than the Radeon HD 7950. (explain)

GeForce GTX 980 144128 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 54528 (61%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 980 is superior to the Radeon HD 7950, by a large margin. (explain)

GeForce GTX 980 72064 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 46464 (182%)

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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GeForce GTX 980

Amazon.com

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Radeon HD 7950

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 GeForce GTX 980 Radeon HD 7950
Manufacturer nVidia AMD
Year September 2014 January 2012
Code Name GM204-400 Tahiti Pro
Memory 4096 MB 1536 MB
Core Speed 1126 MHz 800 MHz
Memory Speed 7000 MHz 5000 MHz
Power (Max TDP) 165 watts 200 watts
Bandwidth 224000 MB/sec 240000 MB/sec
Texel Rate 144128 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 72064 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 2048 1792
Texture Mapping Units 128 112
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 5200 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 980

Amazon.com

Check prices at:

Radeon HD 7950

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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