GeForce 920M vs Radeon HD 5550

Intro

Compare all of that to the Radeon HD 5550, which uses a 40 nm design. AMD has set the core frequency at 550 MHz. The DDR2 memory is set to run at a frequency of 400 MHz on this particular model. It features 320(64x5) SPUs as well as 16 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 920M should in theory perform a bit faster than the Radeon HD 5550 in general. (explain)

GeForce 920M		14400 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 920M is a lot (approximately 247%) more effective at anisotropic filtering than the Radeon HD 5550. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 21728 (247%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 920M is superior to the Radeon HD 5550, by far. (explain)

GeForce 920M		7632 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 3232 (73%)

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 transferred across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.