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Radeon R9 280X vs Radeon R9 290X

Intro

The Radeon R9 280X has core clock speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon R9 290X, which has core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2816 SPUs as well as 176 Texture Address Units and 64 Rasterization Operator 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 R9 290X 10609 points
Radeon R9 280X 8886 points
Difference: 1723 (19%)

Zcash Mining Hash Rate

Radeon R9 290X 369 Sol/s
Radeon R9 280X 294 Sol/s
Difference: 75 (26%)

Ethereum Mining Hash Rate

Radeon R9 290X 29 Mh/s
Radeon R9 280X 21 Mh/s
Difference: 8 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 280X 250 Watts
Radeon R9 290X 300 Watts
Difference: 50 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290X should perform a small bit faster than the Radeon R9 280X overall. (explain)

Radeon R9 290X 320000 MB/sec
Radeon R9 280X 288000 MB/sec
Difference: 32000 (11%)

Texel Rate

The Radeon R9 290X will be a lot (about 29%) faster with regards to anisotropic filtering than the Radeon R9 280X. (explain)

Radeon R9 290X 140800 Mtexels/sec
Radeon R9 280X 108800 Mtexels/sec
Difference: 32000 (29%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 290X is a better choice, by a large margin. (explain)

Radeon R9 290X 51200 Mpixels/sec
Radeon R9 280X 27200 Mpixels/sec
Difference: 24000 (88%)

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 280X

Amazon.com

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Radeon R9 290X

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 280X Radeon R9 290X
Manufacturer AMD AMD
Year October 2013 October 2013
Code Name Tahiti XTL Hawaii XT
Memory 3072 MB 4096 MB
Core Speed 850 MHz 800 MHz
Memory Speed 6000 MHz 5000 MHz
Power (Max TDP) 250 watts 300 watts
Bandwidth 288000 MB/sec 320000 MB/sec
Texel Rate 108800 Mtexels/sec 140800 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 51200 Mpixels/sec
Unified Shaders 2048 2816
Texture Mapping Units 128 176
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 384-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 4313 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 can be processed in one second. This number is calculated by multiplying the total texture units by the core clock 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 per second.

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

Display Prices

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Radeon R9 280X

Amazon.com

Check prices at:

Radeon R9 290X

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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