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Radeon R9 270 vs Radeon R9 390X 8G

Intro

The Radeon R9 270 features core clock speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Compare those specifications to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has clocked the core frequency at 1050 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs and 64 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 390X 8G 13555 points
Radeon R9 270 5943 points
Difference: 7612 (128%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Radeon R9 270 15 Mh/s
Difference: 17 (113%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Radeon R9 390X 8G 275 Watts
Difference: 125 Watts (83%)

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should theoretically be a lot superior to the Radeon R9 270 overall. (explain)

Radeon R9 390X 8G 384000 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 204800 (114%)

Texel Rate

The Radeon R9 390X 8G is quite a bit (about 157%) faster with regards to texture filtering than the Radeon R9 270. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 112800 (157%)

Pixel Rate

The Radeon R9 390X 8G should be much (approximately 133%) faster with regards to FSAA than the Radeon R9 270, and also should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 38400 (133%)

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 390X 8G

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 390X 8G
Manufacturer AMD AMD
Year November 2013 June 2015
Code Name Curacao Pro Grenada XT
Memory 2048 MB 8192 MB
Core Speed 900 MHz 1050 MHz
Memory Speed 5600 MHz 6000 MHz
Power (Max TDP) 150 watts 275 watts
Bandwidth 179200 MB/sec 384000 MB/sec
Texel Rate 72000 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 1280 2816
Texture Mapping Units 80 176
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 6200 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 max amount of information (in units of MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 390X 8G

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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