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GeForce GTX 870M vs GeForce GTX 970M

Intro

The GeForce GTX 870M has a GPU core clock speed of 941 MHz, and the 3072 MB of GDDR5 RAM runs at 1000 MHz through a 192-bit bus. It also is made up of 1344 SPUs, 112 TAUs, and 24 Raster Operation Units.

Compare those specifications to the GeForce GTX 970M, which uses a 28 nm design. nVidia has clocked the core frequency at 924 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this model. It features 1280 SPUs along with 80 TAUs and 48 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 970M 7520 points
GeForce GTX 870M 4770 points
Difference: 2750 (58%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M 75 Watts
GeForce GTX 870M 110 Watts
Difference: 35 Watts (47%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The GeForce GTX 870M is a lot (approximately 43%) better at anisotropic filtering than the GeForce GTX 970M. (explain)

GeForce GTX 870M 105392 Mtexels/sec
GeForce GTX 970M 73920 Mtexels/sec
Difference: 31472 (43%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 970M is a better choice, by far. (explain)

GeForce GTX 970M 44352 Mpixels/sec
GeForce GTX 870M 22584 Mpixels/sec
Difference: 21768 (96%)

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

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GeForce GTX 970M

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 GeForce GTX 870M GeForce GTX 970M
Manufacturer nVidia nVidia
Year March 12 2014 October 7 2014
Code Name GK104 GM204
Memory 3072 MB 3072 MB
Core Speed 941 MHz 924 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 110 watts 75 watts
Bandwidth 96000 MB/sec 96000 MB/sec
Texel Rate 105392 Mtexels/sec 73920 Mtexels/sec
Pixel Rate 22584 Mpixels/sec 44352 Mpixels/sec
Unified Shaders 1344 1280
Texture Mapping Units 112 80
Render Output Units 24 48
Bus Type GDDR5 GDDR5
Bus Width 192-bit 192-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 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card 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 core speed of the card. 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 870M

Amazon.com

Check prices at:

GeForce GTX 970M

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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