Radeon HD 5850 vs Radeon R9 M380

Intro

Compare all of that to the Radeon R9 M380, which features a GPU core clock speed of 1000 MHz, and 4096 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5850 should theoretically perform much faster than the Radeon R9 M380 in general. (explain)

Radeon HD 5850		128000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 32000 (33%)

Texel Rate

The Radeon HD 5850 is quite a bit (more or less 31%) more effective at anisotropic filtering than the Radeon R9 M380. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 12200 (31%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5850 is superior to the Radeon R9 M380, by far. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 7200 (45%)

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 max amount of information (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.