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Radeon R9 290 vs Radeon R9 390X 8G

Intro

The Radeon R9 290 comes with core speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.

Compare that to the Radeon R9 390X 8G, which features GPU core speed of 1050 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also features 2816 SPUs, 176 TAUs, 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 390X 8G 13555 points
Radeon R9 290 9876 points
Difference: 3679 (37%)

Zcash Mining Hash Rate

Radeon R9 390X 8G 330 Sol/s
Radeon R9 290 283 Sol/s
Difference: 47 (17%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Radeon R9 290 29 Mh/s
Difference: 3 (10%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The Radeon R9 390X 8G should be quite a bit (about 44%) more effective at texture filtering than the Radeon R9 290. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Radeon R9 290 128000 Mtexels/sec
Difference: 56800 (44%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by a large margin. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Radeon R9 290 51200 Mpixels/sec
Difference: 16000 (31%)

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

Check prices at:

Radeon R9 390X 8G

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.

Specifications

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Model Radeon R9 290 Radeon R9 390X 8G
Manufacturer AMD AMD
Year November 2013 June 2015
Code Name Hawaii PRO Grenada XT
Memory 4096 MB 8192 MB
Core Speed 800 MHz 1050 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 184800 Mtexels/sec
Pixel Rate 51200 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2560 2816
Texture Mapping Units 160 176
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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon R9 290

Amazon.com

Check prices at:

Radeon R9 390X 8G

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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