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Radeon R9 270 vs Radeon R9 280

Intro

The Radeon R9 270 has a GPU core clock speed of 900 MHz, and the 2048 MB of GDDR5 RAM runs at 1400 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Compare all that to the Radeon R9 280, which features a GPU core clock speed of 933 MHz, and 3072 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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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 280 7961 points
Radeon R9 270 5943 points
Difference: 2018 (34%)

Ethereum Mining Hash Rate

Radeon R9 280 22 Mh/s
Radeon R9 270 15 Mh/s
Difference: 7 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Radeon R9 280 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically, the Radeon R9 280 should perform quite a bit faster than the Radeon R9 270 in general. (explain)

Radeon R9 280 240000 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 60800 (34%)

Texel Rate

The Radeon R9 280 should be a lot (about 45%) faster with regards to AF than the Radeon R9 270. (explain)

Radeon R9 280 104496 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 32496 (45%)

Pixel Rate

The Radeon R9 280 should be just a bit (about 4%) better at full screen anti-aliasing than the Radeon R9 270, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 280 29856 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 1056 (4%)

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 280

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 270 Radeon R9 280
Manufacturer AMD AMD
Year November 2013 March 2014
Code Name Curacao Pro Tahiti Pro
Memory 2048 MB 3072 MB
Core Speed 900 MHz 933 MHz
Memory Speed 5600 MHz 5000 MHz
Power (Max TDP) 150 watts 250 watts
Bandwidth 179200 MB/sec 240000 MB/sec
Texel Rate 72000 Mtexels/sec 104496 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 29856 Mpixels/sec
Unified Shaders 1280 1792
Texture Mapping Units 80 112
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the 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 clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 280

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.

Comments

One Response to “Radeon R9 270 vs Radeon R9 280”
AL says:

I would tHIS22
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