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GeForce GTX 880M vs Radeon R9 M395X

Intro

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

Compare all that to the Radeon R9 M395X, which comes with a GPU core clock speed of 723 MHz, and 4096 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X 125 Watts
GeForce GTX 880M 130 Watts
Difference: 5 Watts (4%)

Memory Bandwidth

The Radeon R9 M395X should in theory be a lot faster than the GeForce GTX 880M in general. (explain)

Radeon R9 M395X 160000 MB/sec
GeForce GTX 880M 128000 MB/sec
Difference: 32000 (25%)

Texel Rate

The GeForce GTX 880M is much (about 32%) better at AF than the Radeon R9 M395X. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon R9 M395X 92544 Mtexels/sec
Difference: 29568 (32%)

Pixel Rate

The GeForce GTX 880M will be a lot (about 32%) more effective at anti-aliasing than the Radeon R9 M395X, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 7392 (32%)

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

Check prices at:

Radeon R9 M395X

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 R9 M395X
Manufacturer nVidia AMD
Year March 12 2014 2015
Code Name GK104 Tonga
Memory 4096 MB 4096 MB
Core Speed 954 MHz 723 MHz
Memory Speed 4000 MHz 5000 MHz
Power (Max TDP) 130 watts 125 watts
Bandwidth 128000 MB/sec 160000 MB/sec
Texel Rate 122112 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 128 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12
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 transported past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 880M

Amazon.com

Check prices at:

Radeon R9 M395X

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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