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GeForce GTX 850M vs GeForce GTX 980

Intro

The GeForce GTX 850M comes with a clock speed of 876 MHz and a DDR3 memory speed of 1000 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Compare that to the GeForce GTX 980, which comes with a clock frequency of 1126 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 TAUs, and 64 Raster Operation 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 980 13552 points
GeForce GTX 850M 3340 points
Difference: 10212 (306%)

Zcash Mining Hash Rate

GeForce GTX 980 408 Sol/s
GeForce GTX 850M 49 Sol/s
Difference: 359 (733%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
GeForce GTX 980 165 Watts
Difference: 125 Watts (313%)

Memory Bandwidth

The GeForce GTX 980 should theoretically be much faster than the GeForce GTX 850M overall. (explain)

GeForce GTX 980 224000 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 192000 (600%)

Texel Rate

The GeForce GTX 980 should be quite a bit (about 311%) more effective at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTX 980 144128 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 109088 (311%)

Pixel Rate

The GeForce GTX 980 will be much (more or less 414%) more effective at full screen anti-aliasing than the GeForce GTX 850M, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 980 72064 Mpixels/sec
GeForce GTX 850M 14016 Mpixels/sec
Difference: 58048 (414%)

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 850M

Amazon.com

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GeForce GTX 980

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 850M GeForce GTX 980
Manufacturer nVidia nVidia
Year March 12 2014 September 2014
Code Name GM107 GM204-400
Memory 2048 MB 4096 MB
Core Speed 876 MHz 1126 MHz
Memory Speed 2000 MHz 7000 MHz
Power (Max TDP) 40 watts 165 watts
Bandwidth 32000 MB/sec 224000 MB/sec
Texel Rate 35040 Mtexels/sec 144128 Mtexels/sec
Pixel Rate 14016 Mpixels/sec 72064 Mpixels/sec
Unified Shaders 640 2048
Texture Mapping Units 40 128
Render Output Units 16 64
Bus Type DDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million 5200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 850M

Amazon.com

Check prices at:

GeForce GTX 980

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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