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Radeon R9 380 4G vs Radeon R9 380X

Intro

The Radeon R9 380 4G features a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon R9 380X, which uses a 28 nm design. AMD has clocked the core speed at 970 MHz. The GDDR5 memory runs at a speed of 1425 MHz on this card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

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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 R9 380 4G 21 Mh/s
Radeon R9 380X 19 Mh/s
Difference: 2 (11%)

3DMark Fire Strike Graphics Score

Radeon R9 380X 9519 points
Radeon R9 380 4G 8837 points
Difference: 682 (8%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Both cards have the exact same bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The Radeon R9 380X will be a small bit (about 14%) faster with regards to AF than the Radeon R9 380 4G. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon R9 380 4G 108640 Mtexels/sec
Difference: 15520 (14%)

Pixel Rate

Both cards have exactly the same pixel rate, so theoretically they should be equally good at at AA, and be able to handle the same resolutions. (explain)

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 380 4G

Amazon.com

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Radeon R9 380X

Amazon.com

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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 380 4G Radeon R9 380X
Manufacturer AMD AMD
Year June 2015 November 2015
Code Name Antigua PRO Tonga XT
Memory 4096 MB 4096 MB
Core Speed 970 MHz 970 MHz
Memory Speed 5700 MHz 5700 MHz
Power (Max TDP) 190 watts 190 watts
Bandwidth 182400 MB/sec 182400 MB/sec
Texel Rate 108640 Mtexels/sec 124160 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 31040 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 28 nm
Transistors 5000 million 5000 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 max amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few 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.

Display Prices

Hide Prices

Radeon R9 380 4G

Amazon.com

Check prices at:

Radeon R9 380X

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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