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Radeon R7 250X vs Radeon R9 270

Intro

The Radeon R7 250X makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this particular card. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Compare those specifications to the Radeon R9 270, which has core speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs as well as 80 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 270 5943 points
Radeon R7 250X 2860 points
Difference: 3083 (108%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 95 Watts
Radeon R9 270 150 Watts
Difference: 55 Watts (58%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270 should theoretically be much superior to the Radeon R7 250X in general. (explain)

Radeon R9 270 179200 MB/sec
Radeon R7 250X 72000 MB/sec
Difference: 107200 (149%)

Texel Rate

The Radeon R9 270 will be quite a bit (more or less 80%) more effective at anisotropic filtering than the Radeon R7 250X. (explain)

Radeon R9 270 72000 Mtexels/sec
Radeon R7 250X 40000 Mtexels/sec
Difference: 32000 (80%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 270 is superior to the Radeon R7 250X, by a large margin. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon R7 250X 16000 Mpixels/sec
Difference: 12800 (80%)

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 R7 250X

Amazon.com

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Radeon R9 270

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 R7 250X Radeon R9 270
Manufacturer AMD AMD
Year February 2014 November 2013
Code Name Cape Verde XT Curacao Pro
Memory 1024 MB 2048 MB
Core Speed 1000 MHz 900 MHz
Memory Speed 4500 MHz 5600 MHz
Power (Max TDP) 95 watts 150 watts
Bandwidth 72000 MB/sec 179200 MB/sec
Texel Rate 40000 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 640 1280
Texture Mapping Units 40 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 1500 million 2800 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 (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R7 250X

Amazon.com

Check prices at:

Radeon R9 270

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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