Radeon HD 4550 512MB vs Radeon R9 M380

Intro

Compare all of that to the Radeon R9 M380, which has GPU core speed of 1000 MHz, and 4096 MB of GDDR5 RAM set to run at 1500 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M380 should be 650% quicker than the Radeon HD 4550 512MB in general, due to its greater bandwidth. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The Radeon R9 M380 should be a lot (about 733%) faster with regards to AF than the Radeon HD 4550 512MB. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 35200 (733%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M380 is a better choice, by far. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 13600 (567%)

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 maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.