Radeon HD 4550 256MB vs Radeon R5 M330

Intro

Compare all that to the Radeon R5 M330, which has a clock speed of 1030 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 64-bit bus, and uses a 28 nm design. It is comprised of 320 SPUs, 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 should be 13% quicker than the Radeon HD 4550 256MB overall, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon R5 M330 is a lot (about 329%) better at AF 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

The Radeon R5 M330 will be quite a bit (about 243%) faster with regards to AA than the Radeon HD 4550 256MB, and also will be capable of handling higher screen resolutions more effectively. (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 max amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.