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GeForce GTX 980M vs Radeon HD 6790

Intro

The GeForce GTX 980M uses a 28 nm design. nVidia has clocked the core frequency at 1038 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this particular card. It features 1536 SPUs as well as 96 TAUs and 64 ROPs.

Compare all that to the Radeon HD 6790, which has clock speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs as well as 40 TAUs and 16 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 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

In theory, the Radeon HD 6790 should perform a little 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 is much (more or less 197%) better at AF than the Radeon HD 6790. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could 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 the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach 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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