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GeForce GTX 860M vs Radeon R9 M275X

Intro

The GeForce GTX 860M features clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs along with 96 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M275X, which has core speeds of 900 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon R9 M275X 50 Watts
Difference: 5 Watts (11%)

Memory Bandwidth

In theory, the Radeon R9 M275X is 13% faster than the GeForce GTX 860M in general, due to its higher bandwidth. (explain)

Radeon R9 M275X 72000 MB/sec
GeForce GTX 860M 64000 MB/sec
Difference: 8000 (13%)

Texel Rate

The GeForce GTX 860M is quite a bit (more or less 113%) more effective at anisotropic filtering than the Radeon R9 M275X. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon R9 M275X 36000 Mtexels/sec
Difference: 40512 (113%)

Pixel Rate

The Radeon R9 M275X should be a little bit (more or less 13%) more effective at full screen anti-aliasing than the GeForce GTX 860M, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M275X 14400 Mpixels/sec
GeForce GTX 860M 12752 Mpixels/sec
Difference: 1648 (13%)

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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GeForce GTX 860M

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 GeForce GTX 860M Radeon R9 M275X
Manufacturer nVidia AMD
Year March 12 2014 May 1 2014
Code Name GM107 Venus XTX
Memory 4096 MB 2048 MB
Core Speed 797 MHz 900 MHz
Memory Speed 4000 MHz 4500 MHz
Power (Max TDP) 45 watts 50 watts
Bandwidth 64000 MB/sec 72000 MB/sec
Texel Rate 76512 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 1152 640
Texture Mapping Units 96 40
Render Output Units 16 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 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better 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 a second.

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

Display Prices

Hide Prices

GeForce GTX 860M

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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