Radeon HD 5750 512MB vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which has a GPU core clock speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon R9 M390X		125 Watts
	Difference: 39 Watts (45%)

Memory Bandwidth

The Radeon R9 M390X should in theory be a lot faster than the Radeon HD 5750 512MB in general. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 86400 (117%)

Texel Rate

The Radeon R9 M390X should be a lot (more or less 267%) faster with regards to texture filtering than the Radeon HD 5750 512MB. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 67344 (267%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M390X is the winner, by far. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 11936 (107%)

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 information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 applied in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many 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.