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GeForce GTX 870M vs Radeon R9 M375

Intro

The GeForce GTX 870M comes with a clock frequency of 941 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and uses a 28 nm design. It features 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Compare that to the Radeon R9 M375, which has GPU core speed of 1015 MHz, and 4096 MB of DDR3 RAM running at 1100 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 870M should perform quite a bit faster than the Radeon R9 M375 in general. (explain)

GeForce GTX 870M 96000 MB/sec
Radeon R9 M375 35200 MB/sec
Difference: 60800 (173%)

Texel Rate

The GeForce GTX 870M should be a lot (more or less 160%) more effective at AF than the Radeon R9 M375. (explain)

GeForce GTX 870M 105392 Mtexels/sec
Radeon R9 M375 40600 Mtexels/sec
Difference: 64792 (160%)

Pixel Rate

The GeForce GTX 870M is a lot (approximately 39%) more effective at full screen anti-aliasing than the Radeon R9 M375, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 870M 22584 Mpixels/sec
Radeon R9 M375 16240 Mpixels/sec
Difference: 6344 (39%)

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 870M

Amazon.com

Check prices at:

Radeon R9 M375

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 870M Radeon R9 M375
Manufacturer nVidia AMD
Year March 12 2014 2015
Code Name GK104 Cape Verde
Memory 3072 MB 4096 MB
Core Speed 941 MHz 1015 MHz
Memory Speed 4000 MHz 2200 MHz
Power (Max TDP) 110 watts (Unknown) watts
Bandwidth 96000 MB/sec 35200 MB/sec
Texel Rate 105392 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 1344 640
Texture Mapping Units 112 40
Render Output Units 24 16
Bus Type GDDR5 DDR3
Bus Width 192-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 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 870M

Amazon.com

Check prices at:

Radeon R9 M375

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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