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GeForce GTX 980 vs Radeon HD 7870 XT

Intro

The GeForce GTX 980 has core clock speeds of 1126 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 64 ROPs.

Compare all that to the Radeon HD 7870 XT, which comes with clock speeds of 925 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 Texture Address Units and 32 Rasterization Operator 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 7870 XT 6390 points
Difference: 7162 (112%)

Ethereum Mining Hash Rate

GeForce GTX 980 20 Mh/s
Radeon HD 7870 XT 15 Mh/s
Difference: 5 (33%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980 165 Watts
Radeon HD 7870 XT 185 Watts
Difference: 20 Watts (12%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 is 17% quicker than the Radeon HD 7870 XT in general, because of its higher data rate. (explain)

GeForce GTX 980 224000 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 32000 (17%)

Texel Rate

The GeForce GTX 980 should be much (more or less 62%) faster with regards to anisotropic filtering than the Radeon HD 7870 XT. (explain)

GeForce GTX 980 144128 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 55328 (62%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 980 is superior to the Radeon HD 7870 XT, and very much so. (explain)

GeForce GTX 980 72064 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 42464 (143%)

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 7870 XT

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 7870 XT
Manufacturer nVidia AMD
Year September 2014 November 2012
Code Name GM204-400 Tahiti LE
Memory 4096 MB 2048 MB
Core Speed 1126 MHz 925 MHz
Memory Speed 7000 MHz 6000 MHz
Power (Max TDP) 165 watts 185 watts
Bandwidth 224000 MB/sec 192000 MB/sec
Texel Rate 144128 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 72064 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 2048 1536
Texture Mapping Units 128 96
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-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 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per 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 - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 980

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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