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Radeon R7 M260X vs Radeon R9 M275X

Intro

The Radeon R7 M260X makes use of a 28 nm design. AMD has clocked the core frequency at 825 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular model. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Compare that to the Radeon R9 M275X, which features GPU core speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M275X should be a bit faster than the Radeon R7 M260X in general. (explain)

Radeon R9 M275X 72000 MB/sec
Radeon R7 M260X 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The Radeon R9 M275X should be a lot (more or less 82%) faster with regards to AF than the Radeon R7 M260X. (explain)

Radeon R9 M275X 36000 Mtexels/sec
Radeon R7 M260X 19800 Mtexels/sec
Difference: 16200 (82%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M275X is the winner, and very much so. (explain)

Radeon R9 M275X 14400 Mpixels/sec
Radeon R7 M260X 6600 Mpixels/sec
Difference: 7800 (118%)

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 M260X

Amazon.com

Check prices at:

Radeon R9 M275X

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 M260X Radeon R9 M275X
Manufacturer AMD AMD
Year June 2014 May 1 2014
Code Name Opal Venus XTX
Memory 2048 MB 2048 MB
Core Speed 825 MHz 900 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) (Unknown) watts 50 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 19800 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 6600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 24 40
Render Output Units 8 16
Bus Type GDDR5 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 information (counted in megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R7 M260X

Amazon.com

Check prices at:

Radeon R9 M275X

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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