GeForce 930M vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which comes with core clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. 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 M390X, in theory, should perform much faster than the GeForce 930M in general. (explain)

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

Texel Rate

The Radeon R9 M390X is much (approximately 316%) more effective at texture 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 is quite a bit (more or less 212%) faster with regards to full screen anti-aliasing than the GeForce 930M, and will be able to handle 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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.