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Radeon R9 270X vs Radeon R9 380 4G

Intro

The Radeon R9 270X makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1400 MHz on this model. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon R9 380 4G, which features a core clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 Texture Address Units, 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.

3DMark Fire Strike Graphics Score

Radeon R9 380 4G 8837 points
Radeon R9 270X 6590 points
Difference: 2247 (34%)

Ethereum Mining Hash Rate

Radeon R9 380 4G 21 Mh/s
Radeon R9 270X 18 Mh/s
Difference: 3 (17%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
Radeon R9 380 4G 190 Watts
Difference: 10 Watts (6%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 4G should be a little bit faster than the Radeon R9 270X overall. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon R9 270X 179200 MB/sec
Difference: 3200 (2%)

Texel Rate

The Radeon R9 380 4G will be much (about 36%) better at texture filtering than the Radeon R9 270X. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 28640 (36%)

Pixel Rate

The Radeon R9 270X will be a bit (approximately 3%) more effective at FSAA than the Radeon R9 380 4G, and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 270X 32000 Mpixels/sec
Radeon R9 380 4G 31040 Mpixels/sec
Difference: 960 (3%)

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 270X

Amazon.com

Check prices at:

Radeon R9 380 4G

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 270X Radeon R9 380 4G
Manufacturer AMD AMD
Year October 2013 June 2015
Code Name Curacao XT Antigua PRO
Memory 2048 MB 4096 MB
Core Speed 1000 MHz 970 MHz
Memory Speed 5600 MHz 5700 MHz
Power (Max TDP) 180 watts 190 watts
Bandwidth 179200 MB/sec 182400 MB/sec
Texel Rate 80000 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 1280 1792
Texture Mapping Units 80 112
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 ×16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon R9 270X

Amazon.com

Check prices at:

Radeon R9 380 4G

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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