Radeon HD 5750 1GB vs Radeon R9 M380

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M380 should be 30% quicker than the Radeon HD 5750 1GB in general, due to its higher bandwidth. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon R9 M380 should be a lot (approximately 59%) more effective at texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 14800 (59%)

Pixel Rate

The Radeon R9 M380 is quite a bit (about 43%) better at full screen anti-aliasing than the Radeon HD 5750 1GB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 5750 1GB		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 data (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.