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Radeon R7 250X 2GB vs Radeon R9 M280X

Intro

The Radeon R7 250X 2GB has a GPU core clock speed of 1000 MHz, and the 2048 MB of GDDR5 memory is set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Compare those specifications to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory is set to run at a speed of 1375 MHz on this card. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X 75 Watts
Radeon R7 250X 2GB 95 Watts
Difference: 20 Watts (27%)

Memory Bandwidth

Performance-wise, the Radeon R9 M280X should in theory be a lot better than the Radeon R7 250X 2GB in general. (explain)

Radeon R9 M280X 88000 MB/sec
Radeon R7 250X 2GB 72000 MB/sec
Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X will be much (approximately 26%) faster with regards to AF than the Radeon R7 250X 2GB. (explain)

Radeon R9 M280X 50400 Mtexels/sec
Radeon R7 250X 2GB 40000 Mtexels/sec
Difference: 10400 (26%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R7 250X 2GB is the winner, though not by far. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
Radeon R9 M280X 14400 Mpixels/sec
Difference: 1600 (11%)

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 2GB

Amazon.com

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Radeon R9 M280X

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 2GB Radeon R9 M280X
Manufacturer AMD AMD
Year February 2014 Feb 9 2015
Code Name Cape Verde XT Saturn XT
Memory 2048 MB 4096 MB
Core Speed 1000 MHz 900 MHz
Memory Speed 4500 MHz 5500 MHz
Power (Max TDP) 95 watts 75 watts
Bandwidth 72000 MB/sec 88000 MB/sec
Texel Rate 40000 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 640 896
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1500 million (Unknown) 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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon R7 250X 2GB

Amazon.com

Check prices at:

Radeon R9 M280X

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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