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Radeon R9 380 4G vs Radeon RX 470

Intro

The Radeon R9 380 4G uses a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 RAM is set to run at a speed of 1425 MHz on this specific model. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Compare that to the Radeon RX 470, which has core speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 RAM. It features 2048 SPUs along with 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.

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon R9 380 4G 21 Mh/s
Difference: 5 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon R9 380 4G 190 Watts
Difference: 70 Watts (58%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 should in theory be a little bit superior to the Radeon R9 380 4G in general. (explain)

Radeon RX 470 211200 MB/sec
Radeon R9 380 4G 182400 MB/sec
Difference: 28800 (16%)

Texel Rate

The Radeon RX 470 will be a little bit (approximately 9%) more effective at texture filtering than the Radeon R9 380 4G. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon R9 380 4G 108640 Mtexels/sec
Difference: 9888 (9%)

Pixel Rate

The Radeon R9 380 4G should be a small bit (more or less 5%) better at full screen anti-aliasing than the Radeon RX 470, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 380 4G 31040 Mpixels/sec
Radeon RX 470 29632 Mpixels/sec
Difference: 1408 (5%)

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 380 4G

Radeon RX 470

Specifications

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Model Radeon R9 380 4G Radeon RX 470
Manufacturer AMD AMD
Year June 2015 August 2016
Code Name Antigua PRO Polaris 10
Memory 4096 MB 8192 MB
Core Speed 970 MHz 926 MHz
Memory Speed 5700 MHz 6600 MHz
Power (Max TDP) 190 watts 120 watts
Bandwidth 182400 MB/sec 211200 MB/sec
Texel Rate 108640 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 31040 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 256-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 5000 million 5700 million
Bus PCIe 3.0 ×16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high 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 number of texture units by the core speed of the chip. The higher this number, the better the card will be at 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 graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Radeon R9 380 4G

Radeon RX 470

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