GeForce 930M vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which features core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M390X should perform much faster than the GeForce 930M overall. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 145600 (1011%)

Texel Rate

The Radeon R9 M390X should be a lot (approximately 316%) faster with regards to anisotropic filtering than the GeForce 930M. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 70272 (316%)

Pixel Rate

The Radeon R9 M390X should be a lot (about 212%) faster with regards to FSAA than the GeForce 930M, and also will be capable of handling higher resolutions better. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 15712 (212%)

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 MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.