GeForce 920M vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which comes with GPU clock speed of 725 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is made up of 720 Stream Processors, 36 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6750 should in theory be quite a bit faster than the GeForce 920M in general. (explain)

Radeon HD 6750		64000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 49600 (344%)

Texel Rate

The GeForce 920M is a small bit (about 17%) faster with regards to AF than the Radeon HD 6750. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 4428 (17%)

Pixel Rate

The Radeon HD 6750 is much (about 52%) better at FSAA than the GeForce 920M, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6750		11600 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 3968 (52%)

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 largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.