Radeon R5 M330 vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which uses a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M390X is 1011% quicker than the Radeon R5 M330 in general, because of its higher bandwidth. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 145600 (1011%)

Texel Rate

The Radeon R9 M390X should be a lot (more or less 349%) faster with regards to AF than the Radeon R5 M330. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 71944 (349%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M390X is a better choice, by far. (explain)

Radeon R9 M390X		23136 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 14896 (181%)

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 MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.