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GeForce GTX 980 vs Radeon HD 7950 3GB

Intro

The GeForce GTX 980 features core clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Compare all that to the Radeon HD 7950 3GB, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM runs at a speed of 1250 MHz on this model. It features 1792 SPUs as well as 112 TAUs 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.

Zcash Mining Hash Rate

GeForce GTX 980 408 Sol/s
Radeon HD 7950 3GB 229 Sol/s
Difference: 179 (78%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980 165 Watts
Radeon HD 7950 3GB 200 Watts
Difference: 35 Watts (21%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 3GB should in theory be a little bit superior to the GeForce GTX 980 in general. (explain)

Radeon HD 7950 3GB 240000 MB/sec
GeForce GTX 980 224000 MB/sec
Difference: 16000 (7%)

Texel Rate

The GeForce GTX 980 will be a lot (more or less 61%) faster with regards to anisotropic filtering than the Radeon HD 7950 3GB. (explain)

GeForce GTX 980 144128 Mtexels/sec
Radeon HD 7950 3GB 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 3GB, by far. (explain)

GeForce GTX 980 72064 Mpixels/sec
Radeon HD 7950 3GB 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 3GB

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 3GB
Manufacturer nVidia AMD
Year September 2014 January 2012
Code Name GM204-400 Tahiti Pro
Memory 4096 MB 3072 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 maximum amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at 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 can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the 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 3GB

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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