GeForce 920M vs Radeon R9 M290X

Intro

Compare those specifications to the Radeon R9 M290X, which features a clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M290X should be quite a bit faster than the GeForce 920M overall. (explain)

Radeon R9 M290X		153600 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 139200 (967%)

Texel Rate

The Radeon R9 M290X should be a lot (approximately 123%) more effective at anisotropic filtering than the GeForce 920M. (explain)

Radeon R9 M290X		68000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 37472 (123%)

Pixel Rate

The Radeon R9 M290X is a lot (approximately 256%) faster with regards to FSAA than the GeForce 920M, and also should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 M290X		27200 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 19568 (256%)

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 (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at 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 card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 potential to reach the max fill rate.