Radeon HD 4550 512MB vs Radeon R9 M385X

Intro

Compare those specs to the Radeon R9 M385X, which makes use of a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this specific model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M385X should theoretically perform much faster than the Radeon HD 4550 512MB in general. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The Radeon R9 M385X should be a lot (about 1183%) better at texture filtering than the Radeon HD 4550 512MB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 56800 (1183%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M385X is superior to the Radeon HD 4550 512MB, by far. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 15200 (633%)

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 (counted in MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the potential to reach the max fill rate.