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GeForce GTX 970M vs Radeon HD 7790

Intro

The GeForce GTX 970M uses a 28 nm design. nVidia has set the core speed at 924 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this particular card. It features 1280 SPUs along with 80 TAUs and 48 ROPs.

Compare those specifications to the Radeon HD 7790, which comes with a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also features 896 SPUs, 56 TAUs, 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 970M 7520 points
Radeon HD 7790 4330 points
Difference: 3190 (74%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M 75 Watts
Radeon HD 7790 85 Watts
Difference: 10 Watts (13%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so in theory they should perform exactly the same. (explain)

Texel Rate

The GeForce GTX 970M will be quite a bit (more or less 32%) faster with regards to texture filtering than the Radeon HD 7790. (explain)

GeForce GTX 970M 73920 Mtexels/sec
Radeon HD 7790 56000 Mtexels/sec
Difference: 17920 (32%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 970M is a better choice, by a large margin. (explain)

GeForce GTX 970M 44352 Mpixels/sec
Radeon HD 7790 16000 Mpixels/sec
Difference: 28352 (177%)

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 970M

Amazon.com

Check prices at:

Radeon HD 7790

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 970M Radeon HD 7790
Manufacturer nVidia AMD
Year October 7 2014 March 2013
Code Name GM204 Bonaire XT
Memory 3072 MB 1024 MB
Core Speed 924 MHz 1000 MHz
Memory Speed 4000 MHz 6000 MHz
Power (Max TDP) 75 watts 85 watts
Bandwidth 96000 MB/sec 96000 MB/sec
Texel Rate 73920 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 44352 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1280 896
Texture Mapping Units 80 56
Render Output Units 48 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million 2080 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.1
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This 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 graphics 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 number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many 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 970M

Amazon.com

Check prices at:

Radeon HD 7790

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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