GeForce 940M vs Radeon R9 M290X

Intro

Compare that to the Radeon R9 M290X, which makes use of a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1200 MHz on this card. It features 1280 SPUs as well as 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M290X should theoretically be a lot better than the GeForce 940M overall. (explain)

Radeon R9 M290X		153600 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 137600 (860%)

Texel Rate

The Radeon R9 M290X is a lot (about 164%) faster with regards to texture filtering than the GeForce 940M. (explain)

Radeon R9 M290X		68000 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 42272 (164%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M290X is the winner, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 18624 (217%)

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 maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.