GeForce 940M vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core frequency at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this specific card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M395X should theoretically be much faster than the GeForce 940M in general. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 144000 (900%)

Texel Rate

The Radeon R9 M395X should be a lot (approximately 260%) better at anisotropic filtering than the GeForce 940M. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 66816 (260%)

Pixel Rate

The Radeon R9 M395X will be a lot (approximately 170%) better at AA than the GeForce 940M, and capable of handling higher resolutions better. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 14560 (170%)

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 (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied 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 higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.