Radeon HD 5750 1GB vs Radeon R9 M385X

Intro

Compare those specs to the Radeon R9 M385X, which comes with core clock speeds of 1100 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X is 30% quicker than the Radeon HD 5750 1GB overall, due to its greater data rate. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 22400 (30%)

Texel Rate

The Radeon R9 M385X should be much (approximately 144%) faster with regards to texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 36400 (144%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M385X is a better choice, by far. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 6400 (57%)

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 largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.