GeForce 940M vs Radeon R9 380X

Intro

Compare those specifications to the Radeon R9 380X, which comes with a clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

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

In theory, the Radeon R9 380X should be quite a bit faster than the GeForce 940M in general. (explain)

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

Texel Rate

The Radeon R9 380X is 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 is a lot (more or less 262%) faster with regards to FSAA than the GeForce 940M, and should be capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.