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Radeon R9 280 vs Radeon RX 480 4GB

Intro

The Radeon R9 280 features a GPU clock speed of 933 MHz, and the 3072 MB of GDDR5 RAM runs at 1250 MHz through a 384-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 480 4GB, which comes with a core clock frequency of 1120 MHz and a GDDR5 memory frequency of 1750 MHz. It also makes use of a 256-bit bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation 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.

Zcash Mining Hash Rate

Radeon RX 480 4GB 267 Sol/s
Radeon R9 280 183 Sol/s
Difference: 84 (46%)

Ethereum Mining Hash Rate

Radeon RX 480 4GB 25 Mh/s
Radeon R9 280 22 Mh/s
Difference: 3 (14%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB 150 Watts
Radeon R9 280 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280 should in theory be a little bit better than the Radeon RX 480 4GB in general. (explain)

Radeon R9 280 240000 MB/sec
Radeon RX 480 4GB 229376 MB/sec
Difference: 10624 (5%)

Texel Rate

The Radeon RX 480 4GB is much (about 54%) more effective at texture filtering than the Radeon R9 280. (explain)

Radeon RX 480 4GB 161280 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 56784 (54%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 480 4GB is superior to the Radeon R9 280, though only just barely. (explain)

Radeon RX 480 4GB 35840 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 5984 (20%)

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 280

Amazon.com

Radeon RX 480 4GB

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 280 Radeon RX 480 4GB
Manufacturer AMD AMD
Year March 2014 June 2016
Code Name Tahiti Pro Polaris 10
Memory 3072 MB 4096 MB
Core Speed 933 MHz 1120 MHz
Memory Speed 5000 MHz 7000 MHz
Power (Max TDP) 250 watts 150 watts
Bandwidth 240000 MB/sec 229376 MB/sec
Texel Rate 104496 Mtexels/sec 161280 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 35840 Mpixels/sec
Unified Shaders 1792 2304
Texture Mapping Units 112 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon R9 280

Amazon.com

Radeon RX 480 4GB

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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