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GeForce GTX 980M vs Radeon HD 6790

Intro

The GeForce GTX 980M makes use of a 28 nm design. nVidia has set the core frequency at 1038 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific card. It features 1536 SPUs along with 96 TAUs and 64 ROPs.

Compare that to the Radeon HD 6790, which has GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also is made up of 800 Stream Processors, 40 Texture Address Units, and 16 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.

3DMark Fire Strike Graphics Score

GeForce GTX 980M 9476 points
Radeon HD 6790 2150 points
Difference: 7326 (341%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
Radeon HD 6790 150 Watts
Difference: 50 Watts (50%)

Memory Bandwidth

The Radeon HD 6790, in theory, should be a small bit faster than the GeForce GTX 980M overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 980M 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The GeForce GTX 980M should be much (about 197%) better at texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 66048 (197%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 980M is the winner, by far. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 52992 (394%)

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 980M

Amazon.com

Check prices at:

Radeon HD 6790

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 980M Radeon HD 6790
Manufacturer nVidia AMD
Year October 7 2014 April 2011
Code Name GM204 Barts LE
Memory 4096 MB 1024 MB
Core Speed 1038 MHz 840 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 100 watts 150 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 99648 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 1536 800
Texture Mapping Units 96 40
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1700 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 980M

Amazon.com

Check prices at:

Radeon HD 6790

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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