Civilization: Beyond Earth Minimum Frame Rates

One of the requests I've received since initially posting this overview of performance was to investigate minimum frame rates. All of the necessary data was already available, but I just hadn't spent much time investigating the subject. It turns out the minimum frame rates end up being a bit more interesting when we get to the subject of Mantle.

Before we get to the charts, let me also explain one detail that can be important: I don't really care much about the pure minimum frame rate. If a game has to load a texture or some other hiccup causes a single frame dip to 10 FPS, but all of the remaining frames render at 90FPS over a two minute period, does that one dip matter much? I don't think so. To better show the impact of minimum frame rates, I've averaged the bottom 1% of all frames over the benchmark sequence. This makes the measurement much more significant, because if you're routinely seeing downward spikes in frame rates it can be distracting.

In the case of Civilization: Beyond Earth, I didn't notice any issues with inconsistent frame rates, so this "Lowest 1% FPS" measurement isn't quite so important, but in other games it can mean the difference between reporting 30FPS as the minimum and reporting 130FPS as the first percentile of frame rates. Basically, Civilization: Beyond Earth hits minimum FPS when you zoom all the way out, particularly when there are a lot of units on the screen, and that's exactly what happens in the benchmark at about the halfway point.

With that explanation out of the way, let's look at the charts:

Civilization: Beyond Earth 4K Minimums

Civilization: Beyond Earth QHD Minimums

Civilization: Beyond Earth 1080p Minimums

Civilization: Beyond Earth 1080p High Minimums

One thing that immediately jumps out is that the improvements in minimum frame rates with Mantle tend to be even higher than the improvements in average frame rates. This is actually more or less what you would expect, particularly in this case where the minimum frame rates appear to be caused by CPU bottlenecks on the faster GPUs like the R9 290X. Lighten the CPU load with Mantle and that allows for frames to be generated more quickly in such cases.

Where average FPS only improved about 5-10% with Mantle, the improvements in minimum frame rates are much more noticeable. The lowly R7 250X sees the least benefit, which makes sense as it's almost totally GPU limited. The R7 250X still improves by 3-5% at our highest resolutions, and a more significant 9% increase at 1080p Ultra; but look at the 1080p High result: it's 19% faster on minimum frame rates. What's more, that 19% mark ends up being pretty tame in comparison to the improvements on the faster GPUs.

The R9 280 improves by 12-25%, with the biggest jump coming at 1080p Ultra. The R9 280X sees 17-24% improvements in minimum frame rates, again with the largest increase coming at 1080p Ultra. And then there's the R9 290X. Interestingly, it only sees a small 5% improvement at 4K Ultra, but at QHD it gets a 16% bump; at 1080p Ultra and High settings, Mantle really frees up some additional performance and the minimum frame rates increase by 39% and 53%!

Moving to the AMD vs. NVIDIA side of things, the R9 290X actually manages to come out ahead of the GTX 980 (though just barely) at 4K and QHD resolutions. The margin of victory for AMD is also quite pronounced at QHD, where it leads by a not insignificant 19% with Mantle enabled (but only 3% with DX11). The R9 280X tells a similar story, where it loses to the GTX 770 by a sometimes large margin using the DX11 path, but Mantle closes the gap and often gives the 280X a lead over the 770.

Looking quickly at the laptops, the GTX 980M continues to be a force to be reckoned with, delivering performance generally slightly above that of the GTX 770 and R9 280X, particularly at the GT72's native 1080p resolution. The GTX 880M also manages to stay above 30FPS in our testing, but the 870M and 860M drop into the low to mid 20s. That said, Civilization: Beyond Earth remains playable even at slightly lower frame rates, as the turn-based nature doesn't generally require fast responses and the mouse input is already decoupled from the rendering pipeline.

Civilization: Beyond Earth Performance AMD CrossFire Performance
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  • siriq - Thursday, October 23, 2014 - link

    Well, i got EVGA 570 classified so i don't need to bother myself with oc. This is what the card do on stock. Will make vid as well if i can get some sleep :D Reply
  • siriq - Thursday, October 23, 2014 - link

    It is just funny i am right after r280 with few fps behind. Reply
  • JarredWalton - Thursday, October 23, 2014 - link

    How are you testing, and how are you calculating the FPS? If you're just using FRAPS and not running the benchmark, you won't get comparable results. Reply
  • siriq - Friday, October 24, 2014 - link

    -benchmark lategameview in the shortcut. Reply
  • feeblegoat - Thursday, October 23, 2014 - link

    I looked the invisible page 3. Not sure I'd only appears on the mobile site. Also, it's good to see the 250x benchmarks thrown in. As a two-year-old gtx 660m owner, I appreciate the low end benchmarks. Reply
  • JarredWalton - Friday, October 24, 2014 - link

    I added page 3 after the initial posting (and some much needed sleep). I just checked on my smartphone and it loads okay, so can you try reloading the page? Let me know if it still doesn't work. Reply
  • Oxford Guy - Friday, October 24, 2014 - link

    If you're planning to do a bit more testing, I'd like to see how the 480 or 580 manage to do. Reply
  • RagingCain - Friday, October 24, 2014 - link

    I will be building a Frame Time Analyzer, similar to my BF4 FTA for Mantle/DX11 users.
    OCN THread: http://www.overclock.net/t/1520615/civ-be-fta-civi...
    My Website: http://www.bytemedev.com/bf4-fta/
    Reply
  • siriq - Wednesday, October 29, 2014 - link

    I had pretty much the same result. Just tested 2560x1440 4xMSAA ULTRA(with high option i have the same as well) with GTX 570 and avg fps is 24.5 . In 1920x1080p just lagging behind of the R9 280 AMD vga. Not bad from Nvidia. Reply
  • JarredWalton - Thursday, October 30, 2014 - link

    Hold on there... the average of the R9 280 at 2560x1440 Ultra is 41FPS, and at 1080p it's 54 FPS. If you're at 24.5 FPS, your GTX 570 is about 50% faster than the slowest GPU I tested, the R7 250X (which is a $100 GPU, sometimes less). Reply

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