NVIDIA GeForce GTX 1080 Founders Edition Video Card Review

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Memory Bandwidth Testing

1080-mem-bandwidth

Testing memory bandwidth on video cards is tricky, but we’ve been dabbling around testing it over the past yaer. We built a new Intel Z170 system to test just memory bandwidth it is best the test on a system that has a CPU with integrated graphics in order for the discrete graphics card can be run in headless mode. We also disabled Windows Aero and set the system to high performance mode for both the display settings and power settings. Nai’s GPU memory bandwidth test only works on NVIDIA CUDA cards, so we tested a handful of NVIDIA GeForce GTX reference cards from the Fermi, Kepler, Maxwell and now the Pascal series to see how they perform.

memory-bandwidth

We weren’t expecting to reach the theoretical peak bandwidth figures, but all of the cards came in reasonably close. The NVIDIA GeForce GTX 1080 is rated as have 320.3 GB/s of memory bandwidth and we averaged 298.8 with the top speed being 299.16 GB/s across the 8GB GDDR5X frame buffer. This is the highest bandwidth test result that we have seen from any series NVIDIA reference card. We’ve seen many gripe about the 256-bit bus used by the GDDR5X memory, but the memory bandwidth scores are up just slightly. No performance drop off was noted in the benchmark and we ran the VRAM bandwidth testing utility at block sizes of 16, 32, 64, 128, 256, 512 and 1024 just to be sure on each card.

It should be noted that this application just tests the free space of the memory and isn’t really a great benchmark test, but it’s just another data point for use to look at and it also gives us a chance to look for any anomalies.

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  • Nick G.

    I have the amp extreme 980ti, and I really love it. It’s boost clock sits at 1445 constant. Since I knew it would go there, I just disabled the auto boosting and manually overclocked it to 1655 with just a small bump in power (105%). After that, it’s dead even with a 1080. I bought it in January 2016 (This year as of this writing) and been super happy with it. I would say if you have a lower card, then the 1080 is the way to go now, but If everything is fine it’s not worth the jump.

    With all that said, I’m really looking forward to seeing what Zotac does with the 1080Ti, that’s when I’ll jump to the 1080 series, or something newer. I usually upgrade every 2 years or so.

  • Jose Suarez

    Small typo in the overclocking page. “By overclocking the NVIDIA GeForce GTX 980 Ti 6GB reference card we were able to take the score of 17,114 on 3DMark Fire Strike and raise it up to 17911.”

    Nice article legitreviews. Keep up the good work.

  • MoogleStiltzkin

    can you please add the division into the benchmark if possible :{ as well as ashes of singularity as a dx12 async compute test xd.

  • Cordell Hughes

    The Nvidia GTX 1080 vs. the AMD Radeon Pro Duo. I’ve looked on over a dozen reviews sites and the Radeon Pro Duo is nowhere to be found with the GTX 1080 which just came out this week. is there some kind of restraining contract that keeps reviewers benchmarking the two together or what?

    • Nathan Kirsch

      AMD didn’t sample us with an AMD Radeon Pro Duo since it’s really not aimed at gamers. If you know of someone that would let me borrow one for 24 hours I’ll happily benchmark it and overnight mail it back!

  • Dicehunter

    The GP104 isn’t partially disabled as you say in the overclocking section, It’s the full GP104 chip.

  • Ali D

    thanks for the review Nathan.

  • Wookie Groomer

    THANK YOU for reviewing it against the Zotac AMP! Extreme. That’s the card I have and no one seems to use it as a reference card for fastest off the shelf 980ti against the new 1080. I suspected it wouldn’t be too far behind like all the other stock 980ti card reviews I have read. I hope with the new 3rd party cards with “extreme” factory overclocking and better cooling the numbers will skyrocket when used in sli.

    • Nathan Kirsch

      My pleasure… Not sure why more sites didn’t use some of the factory overclocked AIB cards as those were by far the most sold variant for the 980 Ti series!

  • Khaled Mohamed Gharib

    The 1080p Fallout and Tomb Raider Charts has the Average and Minimum Colors swapped, and there is no 1080p chart for GTAV.. Time for me to buy a 4K monitor I guess. J/K

    • Nathan Kirsch

      Fixed the chart colors just now after you pointed out that two had the colors switched. Thanks for pointing that out! The GTAV 1080P numbers will be up after spot checking a odd number!

  • Khaled Mohamed Gharib

    In BF4, Average is Orange. In Fallout 4, Average is Blue. In GTAV, Average is Blue, Again. Tomb Raider: Orange. Too frustrating for me.