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Radeon R9 390 8G vs Radeon RX Vega 56

Intro

The Radeon R9 390 8G makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this model. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

Compare those specs to the Radeon RX Vega 56, which features a clock speed of 1156 MHz and a HBM2 memory speed of 1600 MHz. It also features a 2048-bit memory bus, and uses a 14 nm design. It features 3584 SPUs, 224 Texture Address Units, and 64 ROPs.

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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 RX Vega 56 21011 points
Radeon R9 390 8G 12733 points
Difference: 8278 (65%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX Vega 56 210 Watts
Radeon R9 390 8G 275 Watts
Difference: 65 Watts (31%)

Memory Bandwidth

Performance-wise, the Radeon RX Vega 56 should theoretically be a little bit superior to the Radeon R9 390 8G overall. (explain)

Radeon RX Vega 56 419430 MB/sec
Radeon R9 390 8G 384000 MB/sec
Difference: 35430 (9%)

Texel Rate

The Radeon RX Vega 56 should be much (approximately 62%) more effective at texture filtering than the Radeon R9 390 8G. (explain)

Radeon RX Vega 56 258944 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 98944 (62%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX Vega 56 is a better choice, though only just barely. (explain)

Radeon RX Vega 56 73984 Mpixels/sec
Radeon R9 390 8G 64000 Mpixels/sec
Difference: 9984 (16%)

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

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Radeon R9 390 8G

Amazon.com

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Radeon RX Vega 56

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 390 8G Radeon RX Vega 56
Manufacturer AMD AMD
Year June 2015 September 2017
Code Name Grenada PRO Vega 10 XL
Memory 8192 MB 8192 MB
Core Speed 1000 MHz 1156 MHz
Memory Speed 6000 MHz 1600 MHz
Power (Max TDP) 275 watts 210 watts
Bandwidth 384000 MB/sec 419430 MB/sec
Texel Rate 160000 Mtexels/sec 258944 Mtexels/sec
Pixel Rate 64000 Mpixels/sec 73984 Mpixels/sec
Unified Shaders 2560 3584
Texture Mapping Units 160 224
Render Output Units 64 64
Bus Type GDDR5 HBM2
Bus Width 512-bit 2048-bit
Fab Process 28 nm 14 nm
Transistors 6200 million 12500 million
Bus PCIe 3.0 ×16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 390 8G

Amazon.com

Check prices at:

Radeon RX Vega 56

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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