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Radeon R9 290 vs Radeon R9 390 8G

Intro

The Radeon R9 290 uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory works at a speed of 1250 MHz on this specific card. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Compare that to the Radeon R9 390 8G, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 512-bit memory bus, and makes use of a 28 nm design. It is comprised of 2560 SPUs, 160 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 R9 390 8G 12733 points
Radeon R9 290 9876 points
Difference: 2857 (29%)

Zcash Mining Hash Rate

Radeon R9 390 8G 326 Sol/s
Radeon R9 290 283 Sol/s
Difference: 43 (15%)

Ethereum Mining Hash Rate

Radeon R9 290 29 Mh/s
Radeon R9 390 8G 28 Mh/s
Difference: 1 (4%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 390 8G 275 Watts
Radeon R9 290 300 Watts
Difference: 25 Watts (9%)

Memory Bandwidth

Theoretically, the Radeon R9 390 8G should perform a little bit faster than the Radeon R9 290 in general. (explain)

Radeon R9 390 8G 384000 MB/sec
Radeon R9 290 320000 MB/sec
Difference: 64000 (20%)

Texel Rate

The Radeon R9 390 8G will be much (about 25%) faster with regards to AF than the Radeon R9 290. (explain)

Radeon R9 390 8G 160000 Mtexels/sec
Radeon R9 290 128000 Mtexels/sec
Difference: 32000 (25%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390 8G is superior to the Radeon R9 290, and very much so. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
Radeon R9 290 51200 Mpixels/sec
Difference: 12800 (25%)

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 290

Amazon.com

Radeon R9 390 8G

Amazon.com

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 290 Radeon R9 390 8G
Manufacturer AMD AMD
Year November 2013 June 2015
Code Name Hawaii PRO Grenada PRO
Memory 4096 MB 8192 MB
Core Speed 800 MHz 1000 MHz
Memory Speed 5000 MHz 6000 MHz
Power (Max TDP) 300 watts 275 watts
Bandwidth 320000 MB/sec 384000 MB/sec
Texel Rate 128000 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 51200 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 2560 2560
Texture Mapping Units 160 160
Render Output Units 64 64
Bus Type GDDR5 GDDR5
Bus Width 512-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 6200 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon R9 290

Amazon.com

Radeon R9 390 8G

Amazon.com

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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