Radeon R9 390 8G vs Radeon RX 470

Intro

Compare that to the Radeon RX 470, which comes with a GPU core clock speed of 926 MHz, and 8192 MB of GDDR5 memory running at 1650 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

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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 R9 390 8G		12733 points
Radeon RX 470		11756 points
	Difference: 977 (8%)

Zcash Mining Hash Rate

Radeon R9 390 8G		326 Sol/s
Radeon RX 470		289 Sol/s
	Difference: 37 (13%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon RX 470		26 Mh/s
	Difference: 2 (8%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
Radeon R9 390 8G		275 Watts
	Difference: 155 Watts (129%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should theoretically be much superior to the Radeon RX 470 in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon RX 470		211200 MB/sec
	Difference: 172800 (82%)

Texel Rate

The Radeon R9 390 8G should be much (approximately 35%) faster with regards to AF than the Radeon RX 470. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon RX 470		118528 Mtexels/sec
	Difference: 41472 (35%)

Pixel Rate

The Radeon R9 390 8G will be a lot (about 116%) better at full screen anti-aliasing than the Radeon RX 470, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon RX 470		29632 Mpixels/sec
	Difference: 34368 (116%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.