Compare any two graphics cards:
VS

GeForce 820M vs GeForce GTX 1080

Intro

The GeForce 820M has a GPU core clock speed of 719 MHz, and the 2048 MB of DDR3 memory is set to run at 1000 MHz through a 64-bit bus. It also is made up of 96 Stream Processors, 16 TAUs, and 4 Raster Operation Units.

Compare all of that to the GeForce GTX 1080, which has a clock speed of 1607 MHz and a GDDR5X memory frequency of 1251 MHz. It also uses a 256-bit bus, and makes use of a 16 nm design. It features 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

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 1080 21942 points
GeForce 820M 850 points
Difference: 21092 (2481%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
GeForce GTX 1080 180 Watts
Difference: 165 Watts (1100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 will be 1948% faster than the GeForce 820M overall, because of its greater bandwidth. (explain)

GeForce GTX 1080 327680 MB/sec
GeForce 820M 16000 MB/sec
Difference: 311680 (1948%)

Texel Rate

The GeForce GTX 1080 should be quite a bit (more or less 2135%) more effective at texture filtering than the GeForce 820M. (explain)

GeForce GTX 1080 257120 Mtexels/sec
GeForce 820M 11504 Mtexels/sec
Difference: 245616 (2135%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 1080 is a better choice, by a large margin. (explain)

GeForce GTX 1080 102848 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 99972 (3476%)

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

Display Prices

Hide Prices

GeForce 820M

Amazon.com

Check prices at:

GeForce GTX 1080

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

Display Specifications

Hide Specifications

Model GeForce 820M GeForce GTX 1080
Manufacturer nVidia nVidia
Year February 2014 May 2016
Code Name GF117 GP104-400
Memory 2048 MB 8192 MB
Core Speed 719 MHz 1607 MHz
Memory Speed 2000 MHz 10008 MHz
Power (Max TDP) 15 watts 180 watts
Bandwidth 16000 MB/sec 327680 MB/sec
Texel Rate 11504 Mtexels/sec 257120 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 102848 Mpixels/sec
Unified Shaders 96 2560
Texture Mapping Units 16 160
Render Output Units 4 64
Bus Type DDR3 GDDR5X
Bus Width 64-bit 256-bit
Fab Process 28 nm 16 nm
Transistors (Unknown) million 7200 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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

Hide Prices

GeForce 820M

Amazon.com

Check prices at:

GeForce GTX 1080

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield