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Radeon R7 250 vs Radeon R9 M280X

Intro

The Radeon R7 250 comes with core clock speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Compare those specs to the Radeon R9 M280X, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this particular model. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
Radeon R9 M280X 75 Watts
Difference: 10 Watts (15%)

Memory Bandwidth

Performance-wise, the Radeon R9 M280X should theoretically be a small bit better than the Radeon R7 250 overall. (explain)

Radeon R9 M280X 88000 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 14400 (20%)

Texel Rate

The Radeon R9 M280X should be quite a bit (approximately 110%) faster with regards to AF than the Radeon R7 250. (explain)

Radeon R9 M280X 50400 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 26400 (110%)

Pixel Rate

The Radeon R9 M280X is quite a bit (more or less 80%) better at FSAA than the Radeon R7 250, and also should be able to handle higher screen resolutions better. (explain)

Radeon R9 M280X 14400 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 6400 (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 250

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.

Specifications

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Model Radeon R7 250 Radeon R9 M280X
Manufacturer AMD AMD
Year October 2013 Feb 9 2015
Code Name Oland XT Saturn XT
Memory 1024 MB 4096 MB
Core Speed 1000 MHz 900 MHz
Memory Speed 4600 MHz 5500 MHz
Power (Max TDP) 65 watts 75 watts
Bandwidth 73600 MB/sec 88000 MB/sec
Texel Rate 24000 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 8000 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 384 896
Texture Mapping Units 24 56
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1040 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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 number 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon R7 250

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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