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Radeon R9 270 vs Radeon R9 M295X

Intro

The Radeon R9 270 uses a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM works at a frequency of 1400 MHz on this particular model. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Compare all that to the Radeon R9 M295X, which features a clock speed of 750 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X 125 Watts
Radeon R9 270 150 Watts
Difference: 25 Watts (20%)

Memory Bandwidth

Theoretically, the Radeon R9 270 should be just a bit faster than the Radeon R9 M295X in general. (explain)

Radeon R9 270 179200 MB/sec
Radeon R9 M295X 176000 MB/sec
Difference: 3200 (2%)

Texel Rate

The Radeon R9 M295X will be quite a bit (about 33%) better at anisotropic filtering than the Radeon R9 270. (explain)

Radeon R9 M295X 96000 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 24000 (33%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 270 is the winner, but not by far. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon R9 M295X 24000 Mpixels/sec
Difference: 4800 (20%)

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

Display Prices

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Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 M295X

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

Display Specifications

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Model Radeon R9 270 Radeon R9 M295X
Manufacturer AMD AMD
Year November 2013 2014
Code Name Curacao Pro Unknown
Memory 2048 MB 4096 MB
Core Speed 900 MHz 750 MHz
Memory Speed 5600 MHz 5500 MHz
Power (Max TDP) 150 watts 125 watts
Bandwidth 179200 MB/sec 176000 MB/sec
Texel Rate 72000 Mtexels/sec 96000 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 1280 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2800 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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 M295X

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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