Radeon HD 4550 256MB vs Radeon R5 M330

Intro

Compare all that to the Radeon R5 M330, which comes with core speeds of 1030 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R5 M330 will be 13% quicker than the Radeon HD 4550 256MB overall, due to its higher bandwidth. (explain)

Radeon R5 M330		14400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The Radeon R5 M330 should be quite a bit (more or less 329%) faster with regards to texture filtering than the Radeon HD 4550 256MB. (explain)

Radeon R5 M330		20600 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 15800 (329%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R5 M330 is the winner, by a large margin. (explain)

Radeon R5 M330		8240 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 5840 (243%)

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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.