Radeon HD 5750 1GB vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which features a core clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 2048 SPUs, 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 1GB		86 Watts
Radeon R9 M390X		125 Watts
	Difference: 39 Watts (45%)

Memory Bandwidth

The Radeon R9 M390X should in theory perform a lot faster than the Radeon HD 5750 1GB in general. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 86400 (117%)

Texel Rate

The Radeon R9 M390X should be quite a bit (more or less 267%) more effective at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 67344 (267%)

Pixel Rate

The Radeon R9 M390X will be much (more or less 107%) better at FSAA than the Radeon HD 5750 1GB, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon HD 5750 1GB		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 largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.