GeForce GTX 880M vs Radeon HD 4550 512MB

Intro

Compare all that to the Radeon HD 4550 512MB, which makes use of a 55 nm design. AMD has clocked the core speed at 600 MHz. The GDDR3 RAM is set to run at a speed of 800 MHz on this particular model. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
GeForce GTX 880M		130 Watts
	Difference: 105 Watts (420%)

Memory Bandwidth

The GeForce GTX 880M should theoretically perform quite a bit faster than the Radeon HD 4550 512MB overall. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 115200 (900%)

Texel Rate

The GeForce GTX 880M will be quite a bit (more or less 2444%) better at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 117312 (2444%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 880M is the winner, by far. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 4550 512MB		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: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.