GeForce GTX 880M vs Radeon HD 4550 256MB

Intro

Compare all of that to the Radeon HD 4550 256MB, which comes with GPU clock speed of 600 MHz, and 256 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
GeForce GTX 880M		130 Watts
	Difference: 105 Watts (420%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M is 900% quicker than the Radeon HD 4550 256MB in general, because of its higher bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 115200 (900%)

Texel Rate

The GeForce GTX 880M will be much (about 2444%) more effective at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 117312 (2444%)

Pixel Rate

The GeForce GTX 880M is much (approximately 1172%) more effective at AA than the Radeon HD 4550 256MB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 28128 (1172%)

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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.