GeForce 920M vs Radeon HD 4550 256MB

Intro

Compare that to the Radeon HD 4550 256MB, which makes use of a 55 nm design. AMD has set the core frequency at 600 MHz. The DDR3 memory is set to run at a frequency of 800 MHz on this model. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 920M, in theory, should be just a bit faster than the Radeon HD 4550 256MB overall. (explain)

GeForce 920M		14400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 920M is quite a bit (approximately 536%) more effective at AF than the Radeon HD 4550 256MB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 25728 (536%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 920M is superior to the Radeon HD 4550 256MB, by far. (explain)

GeForce 920M		7632 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 5232 (218%)

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 MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.