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Radeon R9 280 vs Radeon RX 470


Intro

The Radeon R9 280 has a clock frequency of 933 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon RX 470, which features GPU core speed of 926 MHz, and 8192 MB of GDDR5 memory set to run at 1650 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

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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 RX 470 11810 points
Radeon R9 280 7949 points
Difference: 3861 (49%)

Zcash Mining Hash Rate

Radeon RX 470 289 Sol/s
Radeon R9 280 183 Sol/s
Difference: 106 (58%)

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon R9 280 22 Mh/s
Difference: 4 (18%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon R9 280 250 Watts
Difference: 130 Watts (108%)

Memory Bandwidth

In theory, the Radeon R9 280 is 14% quicker than the Radeon RX 470 overall, due to its greater bandwidth. (explain)

Radeon R9 280 240000 MB/sec
Radeon RX 470 211200 MB/sec
Difference: 28800 (14%)

Texel Rate

The Radeon RX 470 is a small bit (about 13%) better at texture filtering than the Radeon R9 280. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 14032 (13%)

Pixel Rate

The Radeon R9 280 should be just a bit (approximately 1%) faster with regards to full screen anti-aliasing than the Radeon RX 470, and able to handle higher screen resolutions better. (explain)

Radeon R9 280 29856 Mpixels/sec
Radeon RX 470 29632 Mpixels/sec
Difference: 224 (1%)

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

Radeon R9 280

Radeon RX 470

Specifications

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Model Radeon R9 280 Radeon RX 470
Manufacturer AMD AMD
Year March 2014 August 2016
Code Name Tahiti Pro Polaris 10
Memory 3072 MB 8192 MB
Core Speed 933 MHz 926 MHz
Memory Speed 5000 MHz 6600 MHz
Power (Max TDP) 250 watts 120 watts
Bandwidth 240000 MB/sec 211200 MB/sec
Texel Rate 104496 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 29856 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1792 2048
Texture Mapping Units 112 128
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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a 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 number of Raster Operations Pipelines 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 is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Radeon R9 280

Radeon RX 470

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