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Radeon R7 250X vs Radeon RX 580

Intro

The Radeon R7 250X comes with a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Compare all of that to the Radeon RX 580, which makes use of a 14 nm design. AMD has clocked the core speed at 1257 MHz. The GDDR5 RAM works at a frequency of 2000 MHz on this specific card. It features 2304 SPUs as well as 144 TAUs 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 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

In theory, the Radeon RX 580 should be quite a bit faster than the Radeon R7 250X overall. (explain)

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

Texel Rate

The Radeon RX 580 is a lot (about 353%) faster with regards to AF than the Radeon R7 250X. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 580 is superior to the Radeon R7 250X, and very much so. (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

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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 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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out 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 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 number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum 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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