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Radeon R9 380X vs Radeon RX 470


Intro

The Radeon R9 380X has a GPU core speed of 970 MHz, and the 4096 MB of GDDR5 RAM runs at 1425 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 470, which has clock speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

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 380X 9520 points
Difference: 2290 (24%)

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon R9 380X 19 Mh/s
Difference: 7 (37%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon RX 470 should be a small bit faster than the Radeon R9 380X in general. (explain)

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

Texel Rate

The Radeon R9 380X is a bit (approximately 5%) more effective at AF than the Radeon RX 470. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon RX 470 118528 Mtexels/sec
Difference: 5632 (5%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380X is the winner, but it probably won't make a huge difference. (explain)

Radeon R9 380X 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 380X

Radeon RX 470

Specifications

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Model Radeon R9 380X Radeon RX 470
Manufacturer AMD AMD
Year November 2015 August 2016
Code Name Tonga XT 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 124160 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 2048 2048
Texture Mapping Units 128 128
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 x16 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 max amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 ability to reach the max fill rate.

Radeon R9 380X

Radeon RX 470

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