GeForce 940M vs Radeon R9 380X

Intro

Compare all of that to the Radeon R9 380X, which makes use of a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM runs at a frequency of 1425 MHz on this card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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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 940M		1740 points
	Difference: 7779 (447%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 380X should perform much faster than the GeForce 940M overall. (explain)

Radeon R9 380X		182400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 166400 (1040%)

Texel Rate

The Radeon R9 380X should be much (approximately 383%) more effective at texture filtering than the GeForce 940M. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 98432 (383%)

Pixel Rate

The Radeon R9 380X will be quite a bit (approximately 262%) more effective at full screen anti-aliasing than the GeForce 940M, and also capable of handling higher resolutions better. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 22464 (262%)

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

Specifications

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

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher 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 one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.