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Radeon R7 250X 2GB vs Radeon R9 M395X

Intro

The Radeon R7 250X 2GB comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Compare those specs to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this model. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

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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

Performance-wise, the Radeon R9 M395X should in theory be quite a bit superior to 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 is a lot (more or less 131%) faster with regards to anisotropic filtering 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

The Radeon R9 M395X should be much (more or less 45%) faster with regards to FSAA than the Radeon R7 250X 2GB, and also able to handle higher resolutions while still performing well. (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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is worked out 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 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock 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 rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory 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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