GeForce 920M vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this particular model. It features 2560 SPUs along with 160 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 390 8G		12733 points
GeForce 920M		1180 points
	Difference: 11553 (979%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 390 8G should in theory be quite a bit superior to the GeForce 920M overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 369600 (2567%)

Texel Rate

The Radeon R9 390 8G should be a lot (about 424%) better at texture filtering than the GeForce 920M. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 129472 (424%)

Pixel Rate

The Radeon R9 390 8G should be much (about 739%) faster with regards to FSAA than the GeForce 920M, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 56368 (739%)

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 largest amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 get to the maximum fill rate.