Radeon R9 390 8G vs Radeon RX 580

Intro

Compare that to the Radeon RX 580, which comes with core clock speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 memory. It features 2304 SPUs along with 144 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 580		13630 points
Radeon R9 390 8G		12733 points
	Difference: 897 (7%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Radeon RX 580		315 Sol/s
	Difference: 11 (3%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon RX 580		28 Mh/s
	Difference: 0 (0%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon R9 390 8G		275 Watts
	Difference: 90 Watts (49%)

Memory Bandwidth

In theory, the Radeon R9 390 8G will be 46% quicker than the Radeon RX 580 in general, because of its greater bandwidth. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon RX 580		262144 MB/sec
	Difference: 121856 (46%)

Texel Rate

The Radeon RX 580 will be a small bit (approximately 13%) faster with regards to texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 21008 (13%)

Pixel Rate

The Radeon R9 390 8G is a lot (more or less 59%) more effective at FSAA than the Radeon RX 580, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon RX 580		40224 Mpixels/sec
	Difference: 23776 (59%)

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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant 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 maximum fill rate.