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GeForce GTX 980 vs Radeon HD 7950 3GB

Intro

The GeForce GTX 980 makes use of a 28 nm design. nVidia has set the core frequency at 1126 MHz. The GDDR5 memory works at a frequency of 1750 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 64 ROPs.

Compare all that to the Radeon HD 7950 3GB, which has a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 384-bit memory bus, and uses a 28 nm design. It features 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.

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

In theory, the Radeon HD 7950 3GB will be 7% quicker than the GeForce GTX 980 overall, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 980 should be much (about 61%) better at AF 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

The GeForce GTX 980 should be quite a bit (about 182%) better at FSAA than the Radeon HD 7950 3GB, and capable of handling higher screen resolutions better. (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

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.

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 max amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum 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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