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Radeon R9 280X vs Radeon R9 290

Intro

The Radeon R9 280X comes with 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 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon R9 290, which comes with a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 512-bit memory bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 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 290 9876 points
Radeon R9 280X 8886 points
Difference: 990 (11%)

Zcash Mining Hash Rate

Radeon R9 280X 294 Sol/s
Radeon R9 290 283 Sol/s
Difference: 11 (4%)

Ethereum Mining Hash Rate

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

Memory Bandwidth

As far as performance goes, the Radeon R9 290 should theoretically be a bit superior to the Radeon R9 280X in general. (explain)

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

Texel Rate

The Radeon R9 290 is a small bit (about 18%) more effective at texture filtering than the Radeon R9 280X. (explain)

Radeon R9 290 128000 Mtexels/sec
Radeon R9 280X 108800 Mtexels/sec
Difference: 19200 (18%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 290 is superior to the Radeon R9 280X, and very much so. (explain)

Radeon R9 290 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

Check prices at:

Radeon R9 290

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 290
Manufacturer AMD AMD
Year October 2013 November 2013
Code Name Tahiti XTL Hawaii PRO
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 128000 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 51200 Mpixels/sec
Unified Shaders 2048 2560
Texture Mapping Units 128 160
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 largest amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's 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 many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 280X

Amazon.com

Check prices at:

Radeon R9 290

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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