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Radeon R9 390 8G vs Radeon RX Vega 56

Intro

The Radeon R9 390 8G has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 512-bit memory bus, and uses a 28 nm design. It is comprised of 2560 SPUs, 160 TAUs, and 64 ROPs.

Compare those specs to the Radeon RX Vega 56, which has a GPU core clock speed of 1156 MHz, and 8192 MB of HBM2 RAM set to run at 1600 MHz through a 2048-bit bus. It also is comprised of 3584 SPUs, 224 TAUs, and 64 Raster Operation Units.

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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

As far as performance goes, the Radeon RX Vega 56 should in theory be a small bit better than the Radeon R9 390 8G in general. (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 is a lot (about 62%) better 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

The Radeon RX Vega 56 should be a bit (about 16%) more effective at full screen anti-aliasing than the Radeon R9 390 8G, and will be capable of handling higher screen resolutions better. (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 data (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - 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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