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Radeon R7 250X vs Radeon RX 580

Intro

The Radeon R7 250X uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1125 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon RX 580, which comes with GPU core speed of 1257 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation 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 RX 580 13630 points
Radeon R7 250X 2860 points
Difference: 10770 (377%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 95 Watts
Radeon RX 580 185 Watts
Difference: 90 Watts (95%)

Memory Bandwidth

Performance-wise, the Radeon RX 580 should theoretically be a lot better than the Radeon R7 250X in general. (explain)

Radeon RX 580 262144 MB/sec
Radeon R7 250X 72000 MB/sec
Difference: 190144 (264%)

Texel Rate

The Radeon RX 580 will be much (approximately 353%) better at texture filtering than the Radeon R7 250X. (explain)

Radeon RX 580 181008 Mtexels/sec
Radeon R7 250X 40000 Mtexels/sec
Difference: 141008 (353%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 580 is the winner, by far. (explain)

Radeon RX 580 40224 Mpixels/sec
Radeon R7 250X 16000 Mpixels/sec
Difference: 24224 (151%)

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 RX 580

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 250X Radeon RX 580
Manufacturer AMD AMD
Year February 2014 April 2017
Code Name Cape Verde XT Polaris 20
Memory 1024 MB 8192 MB
Core Speed 1000 MHz 1257 MHz
Memory Speed 4500 MHz 8000 MHz
Power (Max TDP) 95 watts 185 watts
Bandwidth 72000 MB/sec 262144 MB/sec
Texel Rate 40000 Mtexels/sec 181008 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 40224 Mpixels/sec
Unified Shaders 640 2304
Texture Mapping Units 40 144
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 1500 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially 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 RX 580

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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