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GeForce GTX 870M vs Radeon RX 460

Intro

The GeForce GTX 870M uses a 28 nm design. nVidia has set the core frequency at 941 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this specific card. It features 1344 SPUs as well as 112 TAUs and 24 Rasterization Operator Units.

Compare all that to the Radeon RX 460, which comes with a GPU core clock speed of 1090 MHz, and 4096 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
GeForce GTX 870M 110 Watts
Difference: 35 Watts (47%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 should be 17% faster than the GeForce GTX 870M in general, because of its higher bandwidth. (explain)

Radeon RX 460 112000 MB/sec
GeForce GTX 870M 96000 MB/sec
Difference: 16000 (17%)

Texel Rate

The GeForce GTX 870M will be a lot (approximately 73%) faster with regards to anisotropic filtering than the Radeon RX 460. (explain)

GeForce GTX 870M 105392 Mtexels/sec
Radeon RX 460 61040 Mtexels/sec
Difference: 44352 (73%)

Pixel Rate

The GeForce GTX 870M will be quite a bit (about 29%) faster with regards to anti-aliasing than the Radeon RX 460, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 870M 22584 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 5144 (29%)

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

Radeon RX 460

Amazon.com

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 RX 460
Manufacturer nVidia AMD
Year March 12 2014 August 2016
Code Name GK104 Polaris 11
Memory 3072 MB 4096 MB
Core Speed 941 MHz 1090 MHz
Memory Speed 4000 MHz 7000 MHz
Power (Max TDP) 110 watts 75 watts
Bandwidth 96000 MB/sec 112000 MB/sec
Texel Rate 105392 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1344 896
Texture Mapping Units 112 56
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 28 nm 14 nm
Transistors (Unknown) million 3000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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