GeForce GTX 880M vs Radeon HD 4550 256MB

Intro

Compare those specifications 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 RAM runs at a frequency of 800 MHz on this specific card. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

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 should perform quite a bit faster than the Radeon HD 4550 256MB overall. (explain)

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

Texel Rate

The GeForce GTX 880M should be quite a bit (about 2444%) better 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 will be a lot (more or less 1172%) better at full screen anti-aliasing than the Radeon HD 4550 256MB, and should be 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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.