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Radeon R7 M265 vs Radeon R9 M270X

Intro

The Radeon R7 M265 comes with a GPU core speed of 725 MHz, and the 2048 MB of DDR3 memory runs at 1000 MHz through a 128-bit bus. It also features 384 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the Radeon R9 M270X, which features GPU core speed of 725 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M270X should be much faster than the Radeon R7 M265 in general. (explain)

Radeon R9 M270X 72000 MB/sec
Radeon R7 M265 32000 MB/sec
Difference: 40000 (125%)

Texel Rate

The Radeon R9 M270X should be a lot (approximately 67%) better at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon R9 M270X 29000 Mtexels/sec
Radeon R7 M265 17400 Mtexels/sec
Difference: 11600 (67%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M270X is a better choice, by a large margin. (explain)

Radeon R9 M270X 11600 Mpixels/sec
Radeon R7 M265 5800 Mpixels/sec
Difference: 5800 (100%)

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 M265

Amazon.com

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Radeon R9 M270X

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 M265 Radeon R9 M270X
Manufacturer AMD AMD
Year May 1 2014 May 1 2014
Code Name Opal XT Venus XT
Memory 2048 MB 2048 MB
Core Speed 725 MHz 725 MHz
Memory Speed 2000 MHz 4500 MHz
Power (Max TDP) (Unknown) watts (Unknown) watts
Bandwidth 32000 MB/sec 72000 MB/sec
Texel Rate 17400 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 5800 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 24 40
Render Output Units 8 16
Bus Type DDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x8 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 (in units of megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 get to the max fill rate.

Display Prices

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Radeon R7 M265

Amazon.com

Check prices at:

Radeon R9 M270X

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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