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GeForce 920M vs Radeon HD 7790

Intro

The GeForce 920M makes use of a 28 nm design. nVidia has clocked the core frequency at 954 MHz. The DDR3 memory works at a frequency of 900 MHz on this specific card. It features 384 SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 7790, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is comprised of 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

Radeon HD 7790 4330 points
GeForce 920M 1180 points
Difference: 3150 (267%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 7790 should be a lot faster than the GeForce 920M overall. (explain)

Radeon HD 7790 96000 MB/sec
GeForce 920M 14400 MB/sec
Difference: 81600 (567%)

Texel Rate

The Radeon HD 7790 will be quite a bit (more or less 83%) better at texture filtering than the GeForce 920M. (explain)

Radeon HD 7790 56000 Mtexels/sec
GeForce 920M 30528 Mtexels/sec
Difference: 25472 (83%)

Pixel Rate

The Radeon HD 7790 is much (more or less 110%) faster with regards to AA than the GeForce 920M, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 7790 16000 Mpixels/sec
GeForce 920M 7632 Mpixels/sec
Difference: 8368 (110%)

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 920M

Amazon.com

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Radeon HD 7790

Amazon.com

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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 920M Radeon HD 7790
Manufacturer nVidia AMD
Year March 12 2015 March 2013
Code Name GK208 Bonaire XT
Memory 2048 MB 1024 MB
Core Speed 954 MHz 1000 MHz
Memory Speed 1800 MHz 6000 MHz
Power (Max TDP) (Unknown) watts 85 watts
Bandwidth 14400 MB/sec 96000 MB/sec
Texel Rate 30528 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 7632 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 384 896
Texture Mapping Units 32 56
Render Output Units 8 16
Bus Type DDR3 GDDR5
Bus Width 64-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 data (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially 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 920M

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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