GeForce 940M vs Radeon R9 290X

Intro

Compare those specs to the Radeon R9 290X, which comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 512-bit memory bus, and makes use of a 28 nm design. It features 2816 SPUs, 176 TAUs, and 64 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 290X		10609 points
GeForce 940M		1740 points
	Difference: 8869 (510%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 290X should theoretically be quite a bit superior to the GeForce 940M overall. (explain)

Radeon R9 290X		320000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 304000 (1900%)

Texel Rate

The Radeon R9 290X is a lot (more or less 447%) faster with regards to AF than the GeForce 940M. (explain)

Radeon R9 290X		140800 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 115072 (447%)

Pixel Rate

The Radeon R9 290X should be much (about 497%) more effective at anti-aliasing than the GeForce 940M, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 290X		51200 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 42624 (497%)

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 max amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 amount of texture map elements (texels) that can be processed in one second. This number is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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