GeForce 920M vs Radeon HD 5750 512MB

Intro

Compare those specs to the Radeon HD 5750 512MB, which comes with GPU core speed of 700 MHz, and 512 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5750 512MB should be much faster than the GeForce 920M overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 59200 (411%)

Texel Rate

The GeForce 920M is quite a bit (about 21%) more effective at AF than the Radeon HD 5750 512MB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 5328 (21%)

Pixel Rate

The Radeon HD 5750 512MB should be quite a bit (about 47%) faster with regards to anti-aliasing than the GeForce 920M, and should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 3568 (47%)

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 information (measured in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.