Radeon R9 390 8G vs Radeon RX 480

Intro

Compare those specs to the Radeon RX 480, which features GPU core speed of 1120 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation Units.

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 480		13349 points
Radeon R9 390 8G		12733 points
	Difference: 616 (5%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Radeon RX 480		280 Sol/s
	Difference: 46 (16%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon RX 480		27 Mh/s
	Difference: 1 (4%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480		150 Watts
Radeon R9 390 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

In theory, the Radeon R9 390 8G should be 46% quicker than the Radeon RX 480 in general, because of its higher data rate. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon RX 480		262144 MB/sec
	Difference: 121856 (46%)

Texel Rate

The Radeon RX 480 should be a little bit (about 1%) better at anisotropic filtering than the Radeon R9 390 8G. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 1280 (1%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 390 8G is the winner, by a large margin. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon RX 480		35840 Mpixels/sec
	Difference: 28160 (79%)

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 data (counted in megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.