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GeForce GTX 880M vs Radeon HD 6790

Intro

The GeForce GTX 880M features a core clock speed of 954 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon HD 6790, which uses a 40 nm design. AMD has clocked the core speed at 840 MHz. The GDDR5 RAM is set to run at a frequency of 1050 MHz on this particular model. It features 800 SPUs along with 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 880M 6360 points
Radeon HD 6790 2150 points
Difference: 4210 (196%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
Radeon HD 6790 150 Watts
Difference: 20 Watts (15%)

Memory Bandwidth

The Radeon HD 6790 should in theory perform a little bit faster than the GeForce GTX 880M overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 880M 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The GeForce GTX 880M is quite a bit (more or less 263%) better at anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 88512 (263%)

Pixel Rate

The GeForce GTX 880M should be quite a bit (about 127%) faster with regards to anti-aliasing than the Radeon HD 6790, and also will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 17088 (127%)

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 880M

Amazon.com

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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 880M Radeon HD 6790
Manufacturer nVidia AMD
Year March 12 2014 April 2011
Code Name GK104 Barts LE
Memory 4096 MB 1024 MB
Core Speed 954 MHz 840 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 130 watts 150 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 122112 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 1536 800
Texture Mapping Units 128 40
Render Output Units 32 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 information (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units of the card 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 880M

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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