Radeon HD 4550 512MB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which comes with a GPU core clock speed of 715 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R7 M260 will be 25% quicker than the Radeon HD 4550 512MB in general, because of its greater bandwidth. (explain)

Radeon R7 M260		16000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The Radeon R7 M260 will be quite a bit (about 258%) more effective at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon R7 M260		17160 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 12360 (258%)

Pixel Rate

The Radeon R7 M260 is much (approximately 138%) better at full screen anti-aliasing than the Radeon HD 4550 512MB, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R7 M260		5720 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 3320 (138%)

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 (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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