Radeon HD 5750 512MB vs Radeon R9 M380

Intro

Compare all that to the Radeon R9 M380, which has core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M380 should be 30% faster than the Radeon HD 5750 512MB overall, due to its greater data rate. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon R9 M380 should be much (approximately 59%) better at AF than the Radeon HD 5750 512MB. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 14800 (59%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M380 is superior to the Radeon HD 5750 512MB, and very much so. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 4800 (43%)

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 megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.