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Radeon R9 270 vs Radeon R9 380X

Intro

The Radeon R9 270 features a GPU core speed of 900 MHz, and the 2048 MB of GDDR5 memory runs at 1400 MHz through a 256-bit bus. It also features 1280 SPUs, 80 TAUs, and 32 ROPs.

Compare that to the Radeon R9 380X, which comes with core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator 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.

3DMark Fire Strike Graphics Score

Radeon R9 380X 9519 points
Radeon R9 270 5943 points
Difference: 3576 (60%)

Ethereum Mining Hash Rate

Radeon R9 380X 19 Mh/s
Radeon R9 270 15 Mh/s
Difference: 4 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Radeon R9 380X 190 Watts
Difference: 40 Watts (27%)

Memory Bandwidth

The Radeon R9 380X should theoretically perform a small bit faster than the Radeon R9 270 overall. (explain)

Radeon R9 380X 182400 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 3200 (2%)

Texel Rate

The Radeon R9 380X is quite a bit (approximately 72%) better at AF than the Radeon R9 270. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 52160 (72%)

Pixel Rate

The Radeon R9 380X will be a little bit (about 8%) faster with regards to anti-aliasing than the Radeon R9 270, and should be able to handle higher resolutions better. (explain)

Radeon R9 380X 31040 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 2240 (8%)

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 270

Amazon.com

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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.

Specifications

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Model Radeon R9 270 Radeon R9 380X
Manufacturer AMD AMD
Year November 2013 November 2015
Code Name Curacao Pro Tonga XT
Memory 2048 MB 4096 MB
Core Speed 900 MHz 970 MHz
Memory Speed 5600 MHz 5700 MHz
Power (Max TDP) 150 watts 190 watts
Bandwidth 179200 MB/sec 182400 MB/sec
Texel Rate 72000 Mtexels/sec 124160 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 1280 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 5000 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 data (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 are processed per second. This number is calculated by multiplying the total amount of texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon R9 270

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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