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Radeon R9 270X vs Radeon R9 380 4G

Intro

The Radeon R9 270X comes with core clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon R9 380 4G, which features GPU clock speed of 970 MHz, and 4096 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also is comprised of 1792 SPUs, 112 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.

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

The Radeon R9 380 4G, in theory, should be a bit faster than the Radeon R9 270X in general. (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 quite a bit (about 36%) faster with regards to AF 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 should be just a bit (more or less 3%) faster with regards to anti-aliasing than the Radeon R9 380 4G, and will 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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core clock 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 one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max 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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