GeForce 920M vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which comes with core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 RAM. It features 800 SPUs as well as 40 TAUs and 16 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 HD 6770		1520 points
GeForce 920M		1180 points
	Difference: 340 (29%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6770 should in theory perform quite a bit faster than the GeForce 920M overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 52800 (367%)

Texel Rate

The Radeon HD 6770 will be just a bit (more or less 18%) more effective at anisotropic filtering than the GeForce 920M. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 5472 (18%)

Pixel Rate

The Radeon HD 6770 will be much (about 89%) better at AA than the GeForce 920M, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 6768 (89%)

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 data (counted in megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.