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GeForce GTX 850M vs Radeon R9 380X

Intro

The GeForce GTX 850M makes use of a 28 nm design. nVidia has clocked the core speed at 876 MHz. The DDR3 RAM works at a frequency of 1000 MHz on this specific model. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon R9 380X, which uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 memory works at a speed of 1425 MHz on this model. It features 2048 SPUs along with 128 TAUs and 32 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

Radeon R9 380X 9519 points
GeForce GTX 850M 3340 points
Difference: 6179 (185%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
Radeon R9 380X 190 Watts
Difference: 150 Watts (375%)

Memory Bandwidth

The Radeon R9 380X, in theory, should be a lot faster than the GeForce GTX 850M in general. (explain)

Radeon R9 380X 182400 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 150400 (470%)

Texel Rate

The Radeon R9 380X is a lot (approximately 254%) faster with regards to AF than the GeForce GTX 850M. (explain)

Radeon R9 380X 124160 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 89120 (254%)

Pixel Rate

The Radeon R9 380X will be quite a bit (more or less 121%) more effective at FSAA than the GeForce GTX 850M, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 380X 31040 Mpixels/sec
GeForce GTX 850M 14016 Mpixels/sec
Difference: 17024 (121%)

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 850M

Amazon.com

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Radeon R9 380X

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 GTX 850M Radeon R9 380X
Manufacturer nVidia AMD
Year March 12 2014 November 2015
Code Name GM107 Tonga XT
Memory 2048 MB 4096 MB
Core Speed 876 MHz 970 MHz
Memory Speed 2000 MHz 5700 MHz
Power (Max TDP) 40 watts 190 watts
Bandwidth 32000 MB/sec 182400 MB/sec
Texel Rate 35040 Mtexels/sec 124160 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 640 2048
Texture Mapping Units 40 128
Render Output Units 16 32
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million 5000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially 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 850M

Amazon.com

Check prices at:

Radeon R9 380X

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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