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Radeon R9 280X vs Radeon R9 290

Intro

The Radeon R9 280X uses a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this particular card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Compare that to the Radeon R9 290, which features core clock 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.

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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

The Radeon R9 290 should in theory perform a small bit faster than the Radeon R9 280X overall. (explain)

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

Texel Rate

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

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

Pixel Rate

The Radeon R9 290 should be a lot (about 88%) more effective at anti-aliasing than the Radeon R9 280X, and also should be capable of handling higher resolutions more effectively. (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 max amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 bandwidth is, the lower the ability to get to the maximum 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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