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GeForce GTX 1080 vs GeForce GTX 970

Intro

The GeForce GTX 1080 features clock speeds of 1607 MHz on the GPU, and 1251 MHz on the 8192 MB of GDDR5X memory. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

Compare those specifications to the GeForce GTX 970, which has a GPU core clock speed of 1050 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 256-bit bus. It also features 1664 SPUs, 104 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970 145 Watts
GeForce GTX 1080 180 Watts
Difference: 35 Watts (24%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 is 46% faster than the GeForce GTX 970 in general, due to its greater data rate. (explain)

GeForce GTX 1080 327680 MB/sec
GeForce GTX 970 224000 MB/sec
Difference: 103680 (46%)

Texel Rate

The GeForce GTX 1080 should be much (about 135%) more effective at texture filtering than the GeForce GTX 970. (explain)

GeForce GTX 1080 257120 Mtexels/sec
GeForce GTX 970 109200 Mtexels/sec
Difference: 147920 (135%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 1080 is the winner, by a large margin. (explain)

GeForce GTX 1080 102848 Mpixels/sec
GeForce GTX 970 67200 Mpixels/sec
Difference: 35648 (53%)

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

GeForce GTX 1080

GeForce GTX 970

Specifications

Display Specifications

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Model GeForce GTX 1080 GeForce GTX 970
Manufacturer nVidia nVidia
Year May 2016 September 2014
Code Name GP104-400 GM204-200
Memory 8192 MB 4096 MB
Core Speed 1607 MHz 1050 MHz
Memory Speed 10008 MHz 7000 MHz
Power (Max TDP) 180 watts 145 watts
Bandwidth 327680 MB/sec 224000 MB/sec
Texel Rate 257120 Mtexels/sec 109200 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2560 1664
Texture Mapping Units 160 104
Render Output Units 64 64
Bus Type GDDR5X GDDR5
Bus Width 256-bit 256-bit
Fab Process 16 nm 28 nm
Transistors 7200 million 5200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

GeForce GTX 1080

GeForce GTX 970

Comments

3 Responses to “GeForce GTX 1080 vs GeForce GTX 970”
Pee says:

Good good good and so good very good

Gennady says:

GeForce GTX 970 = DirectX 12

Gennady says:

GeForce GTX 970
Render Output Units = 56

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