Radeon R9 M390X vs Radeon RX 570

Intro

Compare all of that to the Radeon RX 570, which uses a 14 nm design. AMD has clocked the core frequency at 1168 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
Radeon RX 570		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 570 should perform a lot faster than the Radeon R9 M390X in general. (explain)

Radeon RX 570		229376 MB/sec
Radeon R9 M390X		160000 MB/sec
	Difference: 69376 (43%)

Texel Rate

The Radeon RX 570 should be much (about 62%) faster with regards to AF than the Radeon R9 M390X. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon R9 M390X		92544 Mtexels/sec
	Difference: 56960 (62%)

Pixel Rate

The Radeon RX 570 should be much (about 62%) faster with regards to AA than the Radeon R9 M390X, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 14240 (62%)

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 transferred over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 is worked out by multiplying the total texture units of the card by the core 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 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 calculated by multiplying the number of Raster Operations Pipelines by the the core 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.