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Radeon R7 250X 2GB vs Radeon R9 M395X

Intro

The Radeon R7 250X 2GB features clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare that to the Radeon R9 M395X, which features a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB 95 Watts
Radeon R9 M395X 125 Watts
Difference: 30 Watts (32%)

Memory Bandwidth

The Radeon R9 M395X should in theory perform quite a bit faster than the Radeon R7 250X 2GB overall. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon R7 250X 2GB 72000 MB/sec
Difference: 88000 (122%)

Texel Rate

The Radeon R9 M395X will be much (approximately 131%) faster with regards to AF than the Radeon R7 250X 2GB. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon R7 250X 2GB 40000 Mtexels/sec
Difference: 52544 (131%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M395X is the winner, by a large margin. (explain)

Radeon R9 M395X 23136 Mpixels/sec
Radeon R7 250X 2GB 16000 Mpixels/sec
Difference: 7136 (45%)

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

Check prices at:

Radeon R9 M395X

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 2GB Radeon R9 M395X
Manufacturer AMD AMD
Year February 2014 2015
Code Name Cape Verde XT Tonga
Memory 2048 MB 4096 MB
Core Speed 1000 MHz 723 MHz
Memory Speed 4500 MHz 5000 MHz
Power (Max TDP) 95 watts 125 watts
Bandwidth 72000 MB/sec 160000 MB/sec
Texel Rate 40000 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 640 2048
Texture Mapping Units 40 128
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-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 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

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

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon R7 250X 2GB

Amazon.com

Check prices at:

Radeon R9 M395X

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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