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Radeon R9 270 vs Radeon R9 M290X

Intro

The Radeon R9 270 comes with a core clock frequency of 900 MHz and a GDDR5 memory speed of 1400 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon R9 M290X, which features core speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon R9 270 150 Watts
Difference: 50 Watts (50%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270 should perform a little bit faster than the Radeon R9 M290X in general. (explain)

Radeon R9 270 179200 MB/sec
Radeon R9 M290X 153600 MB/sec
Difference: 25600 (17%)

Texel Rate

The Radeon R9 270 should be just a bit (more or less 6%) more effective at texture filtering than the Radeon R9 M290X. (explain)

Radeon R9 270 72000 Mtexels/sec
Radeon R9 M290X 68000 Mtexels/sec
Difference: 4000 (6%)

Pixel Rate

The Radeon R9 270 should be just a bit (more or less 6%) better at AA than the Radeon R9 M290X, and also should be capable of handling higher screen resolutions better. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon R9 M290X 27200 Mpixels/sec
Difference: 1600 (6%)

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 R9 270

Amazon.com

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Radeon R9 M290X

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 R9 270 Radeon R9 M290X
Manufacturer AMD AMD
Year November 2013 May 1 2014
Code Name Curacao Pro Neptune XT
Memory 2048 MB 4096 MB
Core Speed 900 MHz 850 MHz
Memory Speed 5600 MHz 4800 MHz
Power (Max TDP) 150 watts 100 watts
Bandwidth 179200 MB/sec 153600 MB/sec
Texel Rate 72000 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1280 1280
Texture Mapping Units 80 80
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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface 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 better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a 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 - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon R9 270

Amazon.com

Check prices at:

Radeon R9 M290X

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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